Correct Answer: A
Explanation
Explanation
speed = distance / time
speed = km / hr
speed = kmph
Correct Answered :
Wrong Answered :
A
speed
B
acceleration
C
momentum
D
mass
speed = distance / time
speed = km / hr
speed = kmph
Correct Answered :
Wrong Answered :
A
salt
B
urea
C
sand
D
oil
Salt lowers the freezing point of ice below zero degree.
Correct Answered :
Wrong Answered :
A
Vitamin A
B
Vitamin B
C
Vitamin C
D
Vitamin D
Scurvy happens when there is a lack of vitamin C, or ascorbic acid. The deficiency leads to symptoms of weakness, anemia, gum disease, and skin problems. This is because vitamin C is needed for making collagen, an important component in connective tissues.
Correct Answered :
Wrong Answered :
A
Green and Yellow
B
Blue and Brown
C
Black and Red
D
White and Gray
The colour of earth wire is generally green in colour green wire stands for grounding / earthing in an electric circuit.
Correct Answered :
Wrong Answered :
A
Concave Mirror
B
Convex Mirror
C
Plane Mirror
D
Biconvex lenses
A concave mirror is used in the design of solar furnaces because they converge the parallel sun rays at a point. This helps to increase the temperature of the furnace. Temperature can reach upto 3500 degree C
Correct Answered :
Wrong Answered :
A
Dengue
B
Chikungunya
C
Filariasis
D
Cholera
Vector borne diseases:
Dengue, Filariasis, Chikungunya
Non vector borne disease:
Cholera
Correct Answered :
Wrong Answered :
A
Hydrogen
B
Butane
C
Methane
D
Carbon Dioxide
Carbon dioxide (CO2) is stored in extinguishers in the liquid phase. It vaporizes when released thereby smothering a fire by excluding the air (oxygen) needed for combustion
Correct Answered :
Wrong Answered :
A
Pascal (Pa)
B
Bar (b)
C
Torr (mmHg)
D
Newton (N)
Newton is not the unit of pressure. It is the unit of force. Atmosphere, torr and pascal (Pa) are the units of pressure.
Correct Answered :
Wrong Answered :
A
Uranium
B
Thorium
C
Nobelium
D
Moylbednum
Nobelium is a synthetic chemical element with the symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the actinide series.
Correct Answered :
Wrong Answered :
A
lotic ecosystem
B
lentic ecosystem
C
Marine ecosystem
D
Terrestrial ecosystem
Lake ecosystems are the primary example of lentic ecosystems. Lentic Ecosystem involves natural resources i.e. lakes and ponds. Lentic word refers to stationary bodies or still water. This ecosystem involves biotic as well as abiotic components.
Correct Answered :
Wrong Answered :
A
Camphor
B
Wood
C
Water
D
Nitrogen
Water is the only common substance that is naturally found as a solid, liquid or gas. Solids, liquids and gases are known as states of matter
Correct Answered :
Wrong Answered :
A
Vienna Convention, 1985
B
Nagoya Protocol, 2010
C
Kyoto Protocol, 1997
D
Geneva Convention, 1979
Vienna Convention for the Protection of the Ozone Layer, (22 March 1985)
Correct Answered :
Wrong Answered :
A
Carbon Monoxide
B
Sulphur Dioxide
C
Methane
D
Nitrous Oxide
Carbon dioxide (CO2) makes up the vast majority of greenhouse gas emissions from the sector, but smaller amounts of methane (CH4) and nitrous oxide (N2O) are also emitted. These gases are released during the combustion of fossil fuels, such as coal, oil, and natural gas, to produce electricity.
Correct Answered :
Wrong Answered :
A
In transverse waves, the particles in the medium move parallel to the direction of propagation of wave
B
The transverse wave moves in the form of crest and troughs
C
The transverse waves move in the form of compressions and rarefactions
D
The transverse waves propagate in a medium which possesses elasticity of volume
The transverse wave moves in the form of crest and troughs
Correct Answered :
Wrong Answered :
A
Succus entericus
B
Bile Juice
C
Gastric Juice
D
Insulin
Gastric Glands are present in the wall of the stomach that release secretions for digestion of food.
The gastric glands produce gastric juice which contains three substances:
1. Hydrochloric acid
2. Pepsin Enzyme 3.
Mucus.
Due to presence of HCl, the gastric juice is acidic in nature . In acidic medium, the enzyme pepsin begins the digestion of proteins present in food to form smaller molecules . HCl kills any bacteria which may enter the stomach. The mucus helps to protect the stomach wall from its own secretion of HCl.
Correct Answered :
Wrong Answered :
A
Microwaves
B
X-rays
C
Light Waves
D
Sound Waves
Sound and water waves are mechanical waves; meaning, they require a medium to travel through.
Correct Answered :
Wrong Answered :
A
Linear motion
B
Circular motion
C
Rotational motion
D
Periodic motion
A simple pendulum consists of a relatively massive object hung by a string from a fixed support. It typically hangs vertically in its equilibrium position. The massive object is affectionately referred to as the pendulum bob. When the bob is displaced from equilibrium and then released, it begins its back and forth vibration about its fixed equilibrium position. The motion is regular and repeating, an example of periodic motion.
Correct Answered :
Wrong Answered :
A
Newton metre
B
Decibel unit
C
Dobson unit
D
Poise
The Dobson Unit is a way to describe how much ozone there would be in the column if it were all squeezed into a single layer. The average amount of ozone in the atmosphere is roughly 300 Dobson Units, equivalent to a layer 3 millimeters (0.12 inches) thickāthe height of 2 pennies stacked together
Correct Answered :
Wrong Answered :
A
Respiration
B
Imbibiton
C
Transpiration
D
Translocation
Transpiration helps to transport minerals from the soil to all parts of the plants.
Correct Answered :
Wrong Answered :
A
Tidal power is a green energy source as it does not emit greenhouse gases
B
Tidal currents are highly unpredictable and inconsistent
C
Electricity can be generated from tides much more efficiently at slower speeds
D
Construction cost of tidal power plants is high but maintenance costs are ralitvely low
Benefit of tidal power is that it is predictable. The gravitational forces of celestial bodies are not going to stop anytime soon. Furthermore, as high and low tide is cyclical, it is far easier for engineers to design efficient systems, than say, predicting when the wind will blow or when the sun will shine.
Correct Answered :
Wrong Answered :
A
Lead
B
Nickel
C
Iron
D
Cadmium
Itai-itai disease is caused by cadmium (Cd) exposure, produced as a result of human activities related to industrialisation
Correct Answered :
Wrong Answered :
A
Force of acceleration
B
Inertia of motion
C
Inertia of rest
D
Inertia of direction
Newton`s first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.
Correct Answered :
Wrong Answered :
A
High heat capacity
B
Low heat capacity
C
High entropy
D
Low entropy
Water has a relatively high heat capacity, meaning it can absorb a lot of heat before its temperature rises. This trait allows the water in every cell of the human body to act as a buffer against sudden temperature changes. Blood, which is made largely of water, moves heat away from the extremities and toward the vital organs when it needs to conserve heat, it flows towards the skin surface to release excess heat when necessary, and it transports muscle heat away as needed. Water also helps expel excess heat from the body as water vapor from the lungs and sweat on the skin.
Correct Answered :
Wrong Answered :
A
Gravitational Potential Energy
B
Mechanical Energy
C
Kinetic Energy
D
Hydrothermal Energy
Wind turbines convert the kinetic energy in the wind into mechanical power. A generator can convert mechanical power into electricity.
Correct Answered :
Wrong Answered :
A
Vitamin A
B
Vitamin B6
C
Vitamin D2
D
Vitamin K
The chemical name of vitamin D2 is Ergocalciferol
Correct Answered :
Wrong Answered :
A
Lead storage cell
B
Leclanche dry cell
C
Daniell cell
D
Hydrogen cell
A secondary cell is a rechargeable battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary cell, which is supplied fully charged and discarded after use. The chemical reaction in a secondary cell is reversible and it has low internal resistance. It can supply both low current and high current.
Example: Li-H Battery, Nickel-cadmium (NiCd) battery, lead storage battery
Correct Answered :
Wrong Answered :
A
Niacin
B
Pantothenic acid
C
Folic acid
D
Riboflavin
Vitamin B-9: Folic acid Your folic acid needs will increase when you become pregnant. Vitamin B-9 can help to reduce your baby`s risk for developing birth defects, including spina bifida and other neural tube defects. Vitamin B is also essential to produce red blood cells.
Correct Answered :
Wrong Answered :
A
Bauxite
B
Silicon
C
Calcium
D
Aluminium
Solar cells are made up of simple voltaic cell that enables conversion of solar energy into electrical energy directly and is made from the second highest element found in earth`s crust. The material that used in solar cells is Silicon
Correct Answered :
Wrong Answered :
A
1st law of motion
B
2nd law of motion
C
3rd law of motion
D
all of the above
Physical independence of forces is a consequence of
Correct Answered :
Wrong Answered :
A
the medium`s particles are carried along with the wave
B
the wave`s energy passes from particle to particle
C
the medium transfers electromagnetic energy
D
the wave increases the potential two spherical energy
A wave is an propagation of energy along a medium. Waves need a medium in order for them to travel from one point or another. A wave is a particulate transfer of motion from one point to another. A very good example of the need of a medium is regarding sound. Sound cannot travel through a vacuum. This is because there are no air molecules to transfer the energy of the sound propagation. Hence no sound travels through the vacuum. The particle to particle interaction and vibration results in the transfer of energy in a wave propagation.
Correct Answered :
Wrong Answered :
A
the total kinetic energy is conserved
B
the total potential energy is conserved
C
the total linear momentum is not conserved
D
the total linear momentum is conserved
In any type of collision, linear momentum is conserved, unless external force acts on the system. elasticity determines the loss in KE. elastic => no loss. inelastic => max. loss of KE
Correct Answered :
Wrong Answered :
A
Lyman
B
Paschen
C
Brackett
D
Balmer
Lyman series of hydrogen atom lies in ultraviolet region, Balmer series lies in visible region while Pfund and Paschen series lie in infrared region.
Correct Answered :
Wrong Answered :
A
Potential energy decreases, kinetic energy increases
B
Potential energy increases, kinetic energy decreases
C
Both potential energy and kinetic energy decreases
D
Absorption spectrum
when a hydrogen atom is raised from ground state to excited state, its potential energy increases whereas kinetic energy decreases.
Correct Answered :
Wrong Answered :
A
11 neutrons and 12 protons
B
12 protons and 11 electrons
C
11 electrons and 12 neutrons
D
12 electrons and 11 neutrons
The atomic number of sodium is 11 that means the number of protons in sodium is 11 and also the number of electrons in sodium is 11 . And the mass number of sodium is 23 that means the total number of protons and neutrons in sodium is 23 . That is, the number of neutrons in the sodium is 12 .
Correct Answered :
Wrong Answered :
A
Surface tension
B
Osmotic pressure
C
Viscosity
D
Refractive index
Colligative properties of solutions are properties that depend upon the concentration of solute molecules or ions, but not upon the identity of the solute. Colligative properties include vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
Correct Answered :
Wrong Answered :
A
Iron
B
Boron
C
Sulphur
D
Cadmium
An element is said to be essential for plants if plants cannot complete their life cycle without that element, and this element directly involved in some many functions of plants
Correct Answered :
Wrong Answered :
A
Transpiration
B
Guttation
C
Bleeding
D
Respiration
Guttation is the process of exudation of water droplets from the tips of leaves in vascular plants through special pores called hydathodes. Therefore, the loss of water from the tips of leaves is called guttation.
Correct Answered :
Wrong Answered :
A
Vitamin A
B
Vitamin D
C
Vitamin E
D
Vitamin K
Vitamin E is the major lipid-soluble antioxidant in the cell antioxidant system and is exclusively obtained from the diet. Vitamin E protects polyunsaturated fatty acids and other components of cell membranes and low-density lipoproteins from oxidation by free radicals
Correct Answered :
Wrong Answered :
A
Goitre
B
Poor Cognitive Development
C
Poor bone growth
D
Increased risk of mortality
Vitamin A deficiency is the leading cause of preventable blindness in children and increases the risk of disease and death from severe infections such as diarrhoeal disease and measles. Vitamin A deficiency may also occur in women during the last trimester of pregnancy in high-risk areas.
Correct Answered :
Wrong Answered :
A
Nitrous oxide
B
Sulphur Dioxide
C
Ammonia
D
Arsenic
Nitrous oxide is a powerful greenhouse gas produced by soil cultivation practices, especially the use of commercial organic fertilizers (including manure), biomass burning etc, This is done by a process of nitrification which converts the nitrogen in fertilizer to the production of nitrous oxide. The excessive use of the fertilizers thereby results in an increase in the nitrous oxide production.
Correct Answered :
Wrong Answered :
A
Nitrous ozonides
B
Hydrocarbons
C
Nitrogen peroxides and hydrocarbons
D
Solar radiations upon nitrogen oxides and hydrocarbons
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight
Correct Answered :
Wrong Answered :
A
a type of tank
B
study of materials and phenomena at low temperature
C
study of radioactive elements
D
none of the above
Cryogenics is the science that addresses the production and effects of very low temperatures. The word originates from the Greek words kryos meaning "frost" and genic meaning "to produce."
Correct Answered :
Wrong Answered :
A
Pyramid
B
Henley`s loop
C
Nephron
D
Nephridia
Together, the renal cortex and renal pyramids constitute the functional portion or of the kidney. Within the parenchyma are about 1 million microscopic structures called , which are the functional units of the kidney. The number of nephrons is constant from birth, and injured or diseased nephrons cannot be replaced.
Correct Answered :
Wrong Answered :
A
7.4
B
2.4
C
11
D
14
Acidity and alkalinity are expressed on the pH scale, which ranges from 0 (strongly acidic) to 14 (strongly basic or alkaline). A pH of 7.0, in the middle of this scale, is neutral. Blood is normally slightly basic, with a normal pH range of 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40.
Correct Answered :
Wrong Answered :
A
The Skin
B
The Liver
C
The Intestine
D
The Heart
A
a-1 b-2 c-3
B
a-3 b-1 c-2
C
a-2 b-1 c-3
D
a-2 b-3 c-1
Radio waves ----> Navigation and Air Traffic Control
Gamma Rays ----> Sterilize Medical Equipment
X-Rays ----> Airpost Scanner
Correct Answered :
Wrong Answered :
A
only i and iii
B
ii only
C
iii only
D
only i and ii
Radiation refers to the emission of energy in rays or waves. Heat moves through space as energy waves. It is the type of heat one feels when sitting in front of a fireplace or around a campfire. It travels in straight lines at the speed of light.
Correct Answered :
Wrong Answered :
A
Sodium Hypochlorite
B
Calcium Carbonate
C
Sodium Benzoate
D
Sodium Bicarbonate
Sodium hypochlorite, commonly known as bleach, is most frequently used as a disinfecting agent. It is a broad-spectrum disinfectant that is effective for the disinfection of viruses, bacteria, fungi, and mycobacterium.
Correct Answered :
Wrong Answered :
A
Excessive bleeding due to injury
B
Poor Vision
C
Swollen feet or legs
D
Retarded Growth
There are several vitamin K-dependent proteins involved in coagulation, bone development, and cardiovascular health. Vitamin K deficiency can contribute to significant bleeding, poor bone development, osteoporosis, and increased cardiovascular disease.
Correct Answered :
Wrong Answered :
A
Aluminium and Tin
B
Copper and Silver
C
Iron , Silver and Tin
D
Copper, Zinc and Nickel
German Silver is an alloy of copper, zinc and nickel, sometimes also containing lead and tin. It was originally named for its silver white colour, but the term silver is now prohibited for alloys not containing that metal
Correct Answered :
Wrong Answered :
A
Sodium Bicarbonate ----> Baking Soda
B
Nitrous Oxide ----> Laughing Gas
C
Calcium Carbonate ----> Limestone
D
Sodium Hydroxide ----> Washing Soda
Sodium Hydroxide is commonly known as Caustic Soda
Its Chemical formula is NaOH
It is used for manufacturing of soaps and detergents
Correct Answered :
Wrong Answered :
A
Digestion is the breakdown of food into simpler form
B
Ingestion is the intake of food through the mouth
C
Egestion is the removal of digested food from the body
D
Absorption is the release of nutrients from food into the blood stream
A
Vitamin D
B
Vitamin A
C
Vitamin K
D
Vitamin E
vitamin D is the vitamin you need for strong bones! It`s also great for forming strong teeth. Vitamin D even lends a hand to an important mineral ā it helps your body absorb the amount of calcium it needs. Vitamin D is made in the skin when exposed to sunlight, or you can get it from the foods you eat.
Correct Answered :
Wrong Answered :
A
Phenyl
B
Chlorine
C
Alcohol
D
Distilled Water
Chlorine is the most widely used primary disinfectant and is also often used to provide residual disinfection in the distribution system
Correct Answered :
Wrong Answered :
A
Malaria
B
Tuberculosis
C
Cholera
D
Typhoid
Contaminated water and poor sanitation are linked to transmission of diseases such as cholera, diarrhoea, dysentery, hepatitis A, typhoid, and polio.
Correct Answered :
Wrong Answered :
A
Calcium - Ca
B
Aluminium - Al
C
Sodium - So
D
Chlorine - Cl
Sodium - Na
Correct Answered :
Wrong Answered :
A
Photosynthesis
B
Polarization
C
Pollination
D
Polymerisation
Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma.
Correct Answered :
Wrong Answered :
A
Fuel cell - Chemical energy is converted into Electrical energy
B
Loud Speaker - Sound energy is converted into Electrical energy
C
Photovoltaic cell - Light energy is converted into Electrical energy
D
Electric motor - Electrical energy is converted into Mechanical Energy
Loud speaker - electric energy is converted into sound energy
Correct Answered :
Wrong Answered :
A
only i and ii
B
only iii
C
only ii
D
only i and iii
The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound
Correct Answered :
Wrong Answered :
A
Troposphere
B
Stratosphere
C
Mesosphere
D
Thermosphere
Most ozone (about 90%) is found in the stratosphere, which begins at about 10ā16 kilometres above Earth`s surface and extends to an altitude of about 50 kilometres. Ozone in the stratosphere protects life on Earth from harmful ultraviolet (UV) radiation and is therefore often called good ozone.
Correct Answered :
Wrong Answered :
A
10-15 cm
B
10-15 m
C
10-12 m
D
10-10 m
Fermi, sometimes also referred to as Femtometer, is a unit of length in the SI unit. One Fermi is a very small length. It is equal to 10-15 of a meter. Being such a small unit of length, Fermi is used in the measure of really small distances in nuclear science.
Correct Answered :
Wrong Answered :
A
M-1L-2T4
B
M2L-2T2
C
M-1L-1T3
D
M1L-1T-2
Modulus of rigidity is the ratio of shear stress to the shear strain.
Ī· = strain / stress
Strain is dimensionless, where as Stress has the dimensions of Pressure.
Stress = F / a Stress = MLT-2 / L2 Stess = ML-1T-2
Correct Answered :
Wrong Answered :
A
zero
B
small but positive
C
small and negative
D
very large
small and negative
Correct Answered :
Wrong Answered :
A
cos-1(v2 / rg)
B
tan-1(v2 / rg)
C
tan-1(v2 / 2rg)
D
cos-1(v2 / rg)1/2
The angle through which a cyclist has to bend himself, to prevent overturning himself is given by tan-1(v2 / rg) Where v is its linear velocity, R is the radius of the turn and g is the acceleration due to gravity.
Correct Answered :
Wrong Answered :
A
SY/4
B
SY/2
C
S2/2Y
D
2S/Y
Given,
Young`s modulus =Y,
Streaching stress=S,
Energy stored per unit volume is, = 1/2 x stress x strian
We know that, stress = strain x Y
Therefore energy per unit volume will be E = 1/2 x S x S/Y = S2 / 2Y
Correct Answered :
Wrong Answered :
A
1/6
B
1/9
C
1/8
D
1/5
A
10i - 12j
B
9i - 12j
C
12i - 9j
D
12i - 10j
A
1/8
B
1/9
C
1/2
D
1/3
1/9
Number of half lives,
n = t/T = 2400/800 = 3
N/No = (1/2)3=1/8
Correct Answered :
Wrong Answered :
A
100π
B
200π
C
400π
D
300π
A
120 Hz
B
2 Hz
C
12 Hz
D
60 Hz
Frequency is nothing but beats / second thus the answer will be 120/60 = 2 Hz
Correct Answered :
Wrong Answered :
A
Silver
B
Mercury
C
Copper
D
Zinc
Cyanide process, also called Macarthur-forrest Process, method of extracting silver and gold from their ores by dissolving them in a dilute solution of sodium cyanide or potassium cyanide.
Correct Answered :
Wrong Answered :
A
Tendriis
B
Thorns
C
Cladodes
D
Bulbils
Phylloclades are the modified flattened branch. It belongs to genus conifer and is seen in xerophytic plants. It helps in removal of excess water, ascent of sap, cooling effect etc., e.g., opuntia, euphorbia etc. Cladodes perform photosynthesis.
Correct Answered :
Wrong Answered :
A
Biochemistry
B
Biotechnology
C
Bioavailability
D
Biophysics
Biochemistry is the branch of science that explores the chemical processes within and related to living organisms. It is a laboratory based science that brings together biology and chemistry. By using chemical knowledge and techniques, biochemists can understand and solve biological problems.
Correct Answered :
Wrong Answered :
A
Helium
B
Nitrogen
C
Argon
D
Neon
Noble gas means any of the gaseous elements which occupy Group 0(18) of the periodic table. They exhibit great stability and very low reaction rate. Complete step by step solution: Noble gases are generally inert gas that exhibit great stability and have generally full filled electronic configuration. They belong to group 18 of the periodic table. Group 18 of the periodic table includes He, Ne, Ar, Kr, Xe and Rn.
Correct Answered :
Wrong Answered :
A
Dobson Unit
B
Darson Unit
C
Datsun Unit
D
Dalton Unit
The Dobson Unit is the most common unit for measuring ozone concentration.
Correct Answered :
Wrong Answered :
A
Natural gas
B
Hydro energy
C
Geo thermal energy
D
Wind energy
Natural Gas resources cannot be replenished in a short period of time. It comes under the category of non renewable resources. Natural resources like fossils fuels ( coal, petroleum, natural gas etc.) cannot be reused
Correct Answered :
Wrong Answered :
A
Vitamin A
B
Vitamin C
C
Vitamin B6
D
Vitamin E
Scurvy is caused by not having enough vitamin C in your diet for at least 3 months. Vitamin C is mainly found in fruit and vegetables. Even people who do not eat very healthily all the time are not usually considered at risk of scurvy.
Correct Answered :
Wrong Answered :
A
Dermatitis
B
Dysmenorrhea
C
Scabies
D
Constipation
Dermatitis (also known as eczema) is inflammation of the skin, typically characterized by itchiness, redness and a rash.
Correct Answered :
Wrong Answered :
A
Photovoltaic cells
B
Dry cells
C
Galvanic cells
D
Electromagnetic cells
Photovoltaic cells
Correct Answered :
Wrong Answered :
A
Wave Energy
B
Windmill Energy
C
Spring Energy
D
Geo Thermal Energy
Geothermal energy is a clean, renewable resource that can be harnessed for use as heat and electricity. Geothermal energy is heat that is generated within the Earth. (Geo means āearth,ā and thermal means āheatā in Greek.) It is a renewable resource that can be harvested for human use.
Correct Answered :
Wrong Answered :
A
Troposphere
B
Stratosphere
C
Mesosphere
D
Ionosphere
The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet`s surface. Most importantly, it absorbs the portion of UV light called UVB.
Correct Answered :
Wrong Answered :
A
The main constituent of bio gas is ethane
B
Gobber gas is produced when crops, vegetable wastes etc., decompose in the absence of oxygen.
C
Bio mass is a renewable source of energy
D
Planting more trees is encouraged to ensure clean environment
A
Carnivores
B
Detritivores
C
Herbivores
D
Omnivores
In a biotic community, the primary consumers or first-order consumers are herbivores, they feed on producers. They are also called key industry animals because they convert plant material into animal material, e.g. rat, deer, rabbit, cattle, goat, sheep, insects etc.
Correct Answered :
Wrong Answered :
A
Pulverisation
B
Vulcanisation
C
Sulphurisation
D
Stablisation
Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140ā160Ā°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance.
Correct Answered :
Wrong Answered :
A
Resistance is too low
B
Voltage is too high
C
Circuit is open
D
Circuit is closed
Circuit is open
Correct Answered :
Wrong Answered :
A
Pyruvic acid
B
Carbon dioxide
C
Adenosine triphosphate
D
Adenosine monophosphate
During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. The energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Correct Answered :
Wrong Answered :
A
Vitamin C
B
Vitamin D
C
Vitamin B
D
Vitamin K
Vitamin D is essential for the absorption of calcium in the body. If a person has a deficiency of vitamin D calcium is not absorbed in the body in adequate quantity. Hence, calcium deficiency in the body occurs in the absence of Vitamin D.
Correct Answered :
Wrong Answered :
A
Time
B
Acceleration
C
Mass
D
Velocity
(a) Displacement is a vector quantity, whereas distance is a scalar quantity.
(b) The physical quantity that includes both the speed and direction of the motion of a body is called its velocity
Correct Answered :
Wrong Answered :
A
Silver
B
Iron
C
Aluminum
D
Silicon
Silicon is, by far, the most common semiconductor material used in solar cells, representing approximately 95% of the modules sold today. It is also the second most abundant material on Earth (after oxygen) and the most common semiconductor used in computer chips.
Correct Answered :
Wrong Answered :
A
Boron
B
Copper
C
Zinc
D
Phosphorus
Little leaf and white bud diseases are caused by a zinc deficiency.
Correct Answered :
Wrong Answered :
A
Heat
B
Air Pollution
C
Water Pollution
D
Food Items
A
focus
B
vertex
C
centre of curvature
D
pole
If a ray is incident normally on a point on the spherical reflecting surface, the angle of incidence, i=0. So, the angle of refraction, r=0. Therefore, the ray retraces its own path after reflection. And such a ray travels through the centre of curvature of the mirror.
Correct Answered :
Wrong Answered :
A
Oxygen and Nitrogen
B
Methane and Carbon Dioxide
C
Argon and Helium
D
Hydrogen and Xenon
Biogas is the mixture of gases produced by organic matter in the absence of oxygen (anaerobically), primarily consisting of methane and carbon dioxide. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste.
Correct Answered :
Wrong Answered :
A
Rotor
B
Nacelle
C
Generator
D
Controller
The nacelle sits atop the tower and contains the gearbox, low- and high-speed shafts, generator, and brake
Correct Answered :
Wrong Answered :
A
Virtual and erect
B
real and errect
C
real and inverted
D
virtual and inverted
A negative magnification indicates that the image is inverted. If the object is placed closer to a converging lens than the focal length, the rays on the far side of the lens diverge. ... The virtual image is upright and the magnification is positive in this case.
Correct Answered :
Wrong Answered :
A
scattering
B
dispersion
C
reflection
D
deviation
Upon passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet. The separation of visible light into its different colors is known as dispersion.
Correct Answered :
Wrong Answered :
A
1D
B
2D
C
3D
D
4D
In the problem, it is given that the near point of defective eye is 1 m and that of a normal eye is 25 cm. Hence u=ā25 cm. The lens used forms its virtual image at near point of hypermetropic eye i.e., v=ā1m=ā100 cm. Using lens formula, we have :- v1āāu1ā=f1āā1001āāā251ā=f1āf=3100ā=0.33mpower=f(inmetres)1ā=+3.0D
Correct Answered :
Wrong Answered :
A
Myopia
B
Presbyopia
C
Hypermetropia
D
Astigmatism
Presbyopia is the gradual loss of your eyes ability to focus on nearby objects. It`s a natural, often annoying part of aging.
Correct Answered :
Wrong Answered :
A
Sclera
B
fovea
C
Ciliary muscles
D
pupil
So for nearby objects, the ciliary muscles contract and squeeze the lens into a more convex shape. This increase in the curvature of the lens corresponds to a shorter focal length.
Correct Answered :
Wrong Answered :
A
Coal
B
Crude Oil
C
Natural Gas
D
Gasoline
Image result for gasoline is a secondary fuel Secondary fuels are fuels that are derived from some primary fuel or fuels through chemical or physical processes. These are fuels that are not found as a natural resource. Gasoline is the best example of a secondary fuel, as it must be made from oil through distillation processes.
Correct Answered :
Wrong Answered :
A
Ultraviolet rays
B
Infrared rays
C
Microwaves
D
Gamma rays
Visible light rays cannot produce enough heat to cook food. So we can say that the infrared rays are the main reason for the working of a solar cooker, it provides a good amount of energy/heat to cook food using a solar cooker.
Correct Answered :
Wrong Answered :
A
Hertz
B
ohms
C
Decibels
D
Moles
We measure sound intensity (also referred to as sound power or sound pressure) in units called decibels. Decibels (dB) are named in honor of Alexander Graham Bell, the inventor of both the telephone and the audiometer.
Correct Answered :
Wrong Answered :
A
Alcohol and acid
B
acid and base
C
ketone and alcohol
D
alcohol and aldehyde
Esters are formed by the condensation reaction between an alcohol and a carboxylic acid. This is known as esterification.
Correct Answered :
Wrong Answered :
A
drying agent
B
hydrating agent
C
carboxylating agent
D
decarboxylating agent
The anhydrous calcium chloride will absorb any water (including condensation, vapour etc) in its environment. It effectively traps that water by changing its molecular make-up.
Correct Answered :
Wrong Answered :
A
Bamboo
B
Alicia
C
Aloe Vera
D
Hibiscus
The genera in the family of Poaceae include a wide range of grasses, such as bamboo, barley, cane, fescue, lawn grass, oats, pappus, and rice.
Correct Answered :
Wrong Answered :
A
Acetic Acid
B
Hydrochloric acid
C
Citric acid
D
Phosphoric acid
Vinegar is an aqueous solution of acetic acid and trace compounds that may include flavorings. Vinegar typically contains 5ā8% acetic acid by volume.
Correct Answered :
Wrong Answered :
A
Gold
B
Silver
C
Copper
D
Glass
Relative to metals, glass is a poor conductor of heat. It is a better heat conductor than some other common building materials, such as wood.
Correct Answered :
Wrong Answered :
A
the petal gets discolourised
B
the colour of petal increases
C
there is no change in petal colour
D
the petal becomes a liquid
Sulphur dioxide is a good reducing agent, hence it can easily decolourise substances in the presence of water. Therefore, when rose petals are placed in a jar containing sulphur dioxide, they get decolourised.
Correct Answered :
Wrong Answered :
A
Gamma rays
B
X-rays
C
Radio frequency waves
D
microwaves
Cell phones give off a form of energy known as radiofrequency (RF) waves
Correct Answered :
Wrong Answered :
A
Sodium
B
Magnesium
C
Carbon
D
Nitrogen
Carbon exhibits the property of catenation due to strong C-C bond.
Correct Answered :
Wrong Answered :
A
Acetic Acid
B
Ethanol
C
Methanol
D
Glycol
Image result for Ethanoic acid is also called as Acetic acid (CH3COOH), also called ethanoic acid, the most important of the carboxylic acids.
Correct Answered :
Wrong Answered :
A
7.35 to 7.45
B
7.52 to 7.72
C
6.21 to 6.61
D
7.00 to 7.21
Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40. A doctor evaluates a person`s acid-base balance by measuring the pH and levels of carbon dioxide (an acid) and bicarbonate (a base) in the blood.
Correct Answered :
Wrong Answered :
A
White flame
B
red flame
C
green flame
D
blue flame
When magnesium ribbon is burnt in the air, it combines with oxygen to form white powder magnesium oxide MgO with the release of heat and light. It forms a white powder of magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product.
Correct Answered :
Wrong Answered :
A
Electrolysis
B
Hydrolysis
C
Carboxylation
D
Decarboxylation
Sodium is extracted from it`s ore by electrolysis of fused sodium chloride. The process is usually carried out ia a special electrochemical cell called the downs cell.
Correct Answered :
Wrong Answered :
A
Magenta
B
White
C
Red
D
Green
The formation of patina on copper is similar to the formation of rust on iron. Both happen when oxygen in the air interacts with the metal atoms in the presence of water. Copper reacts with oxygen that is in the air, resulting in copper dioxide
As copper experiences natural or human-induced corrosive attack, its color changes from the iridescent, golden red normally associated with pure copper to a deep brown and, finally, to hues of blue and green.
Correct Answered :
Wrong Answered :
A
Salicylic acid
B
Sulphuric Acid
C
Hydrochloric Acid
D
Acetic Acid
Aspirin is prepared by chemical synthesis from salicylic acid, through acetylation with acetic anhydride. The molecular weight of aspirin is 180.16g/mol. It is odourless, colourless to white crystals or crystalline powder.
Correct Answered :
Wrong Answered :
A
Sucrose
B
Glucose
C
Dextrose
D
Maltose
Table sugar is made of a type of sugar called sucrose, and is regularly produced from beets or sugar cane. Sucrose is composed of the two simple sugars, glucose and fructose.
Correct Answered :
Wrong Answered :
A
drops below 5
B
rises above 6
C
rises above 8
D
rises above 10
Tooth decay starts when the pH of the mouth is lower than 5.5. Using toothpastes, which are generally basic, for cleaning the teeth can neutralise the excess acid and prevent tooth decay.
Correct Answered :
Wrong Answered :
A
blue flame
B
green flame
C
yellow flame
D
no flame
Unsaturated carbon compounds on combustion give a yellow flame with lots of black soot. On combustion, saturated carbon compounds give a clean flame while unsaturated carbon compounds give a yellow flame with lots of black soot.
Correct Answered :
Wrong Answered :
A
Ionosphere
B
Troposphere
C
Stratosphere
D
Mesosphere
Ozone in the stratosphere protects life on Earth from harmful ultraviolet (UV) radiation and is therefore often called good ozone. This is in contrast to ozone in the troposphere, the lowest layer of the atmosphere, where it is an air pollutant and can be harmful to humans, animals and vegetation.
Correct Answered :
Wrong Answered :
A
Exothermic reactions
B
Endothermic reactions
C
Isothermic reactions
D
Photochemical reactions
A chemical reaction in which heat or energy is liberated is called an exothermic reaction.
Correct Answered :
Wrong Answered :
A
Molecular mass
B
Atomic number
C
Proton
D
Electron
The number of C atoms in homologous series increases gradually. Van der Waal`s force increases as the molecules get bigger. Hence, the melting and boiling points of the members of homologous series increase gradually because their molecular masses increase.
Correct Answered :
Wrong Answered :
A
mild base
B
mild acid
C
neutral solution
D
strong acid
To get rid of stomach pain, people use bases called antacids. These antacids neutralise the excess acid. Magnesium hydroxide (Milk of magnesia), a mild base, is often used for this purpose.
Correct Answered :
Wrong Answered :
A
Sodium
B
Magnesium
C
Gold
D
Silver
After Potassium, Sodium is the most reactive metal.
Correct Answered :
Wrong Answered :
A
Solid
B
Liquid
C
Gas
D
Plasma
Sodium metal reacts rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic.
Correct Answered :
Wrong Answered :
A
Calcium Carbonate
B
Sodium Carbonate
C
Potassium Carbonate
D
Zinc Carbonate
When carbon dioxide is passed through lime water, it turns milky due to formation of white precipitate in form of calcium carbonate.
Correct Answered :
Wrong Answered :
A
Ethane
B
Ethene
C
Propene
D
Alkene
Example of saturated carbon compound is Ethane (C2H6).
Correct Answered :
Wrong Answered :
A
Oxidation
B
Reduction
C
Substitution reaction
D
Combination reaction
Oxygen is eight times more soluble in fats than in water and it is the oxidation resulting from this exposure that is the primary cause of rancidity. Oxidation primarily occurs with unsaturated fats by a free radical-mediated process.
Correct Answered :
Wrong Answered :
A
CHO
B
COOH
C
COOR
D
CO
In Butanal, the functional group is āCHO. In Butanol, the functional group is āOH.
Correct Answered :
Wrong Answered :
A
Iron, Nickel and Chromium
B
Iron, Nickel and Magnesium
C
Iron, Bronze and Magnesium
D
Bronze, Magnesium and Nickel
Stainless steel alloys contain carbon, chromium, nickel, molybdenum, and manganese, phosphorus, sulfur, and silicon as trace elements.
Correct Answered :
Wrong Answered :
A
increases temperature of water
B
decreases temperature of water
C
no change in temperature
D
rapidly increases temperature and then decreases
If you add salt to water, you raise the water`s boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 C for every 58 grams of dissolved salt per kilogram of water.
Correct Answered :
Wrong Answered :
A
Red
B
Yellow
C
Orange
D
Pink
Methyl orange indicator gives red color in acid solution.
Correct Answered :
Wrong Answered :
A
motion
B
uniform motion
C
equillibrium
D
inertia motion
Equilibrium
The state of a body at rest or in uniform motion, the resultant of all forces on which is zero.
Correct Answered :
Wrong Answered :
A
Petrol
B
LPG
C
Coal
D
Wind
A
8,2,1
B
2,1,8
C
2,8,1
D
1,8,2
In this notation, the electronic configuration of sodium would be distributed in the orbitals as 2-8-1.
Correct Answered :
Wrong Answered :
A
Constant proportion
B
Conservation of mass
C
Disproportion
D
Invisible particles
The Law of Conservation of Mass dates from Antoine Lavoisier`s 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
Correct Answered :
Wrong Answered :
A
Lead Acid
B
Nickel Metal Hydride
C
Lithium
D
Nickel Cadmium
A
Nitrogen
B
Methane
C
Oxygen
D
Sulphur Dioxide
Carbon dioxide (CO 2 ā ), methane (CH 4 ā ), nitrous oxide (N 2 ā O) and ozone (O 3 ā ) are the greenhouse gases present in Earth`s atmosphere.
Correct Answered :
Wrong Answered :
A
Lion
B
Cow
C
Grass
D
Cat
Algae, along with plants and some bacteria and fungi, are autotrophs. Autotrophs are the producers in the food chain, meaning they create their own nutrients and energy. Kelp, like most autotrophs, creates energy through a process called photosynthesis.
Correct Answered :
Wrong Answered :
A
Newton
B
Dalton
C
Galileo
D
Aristotle
Isaac Newton`s First Law of Motion describes the behavior of a massive body at rest or in uniform linear motion, i.e., not accelerating or rotating. The First Law states, A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force.
Correct Answered :
Wrong Answered :
A
volume
B
mass
C
area
D
shape
inertia is the nature of the body to resist the change in its state and mass is the amount of matter in the body. Inertia of the body depends on the mass of the body.
Correct Answered :
Wrong Answered :
A
Random acceleration
B
Infinite acceleration
C
Variable acceleration
D
Uniform acceleration
This gravitational force is due to the uniform acceleration due to gravity which is considered constant near the surface of the earth and is equal to g = 10m / s2. Thus a freely falling body falls with the uniform acceleration and so it has non zero velocity or the velocity keeps on increasing.
Correct Answered :
Wrong Answered :
A
Displacement
B
Acceleration
C
Velocity
D
Speed
The distance travelled by an object in a specific direction is called displacement. Displacement is a vector quantity. This means that it can be defined only when proper magnitude and direction are mentioned.
Correct Answered :
Wrong Answered :
A
Argon
B
Helium
C
Radon
D
Neon
Helium has two electrons. Its electronic configuration is 1s2. So it does not have complete octet.
Correct Answered :
Wrong Answered :
A
Coal
B
Petrol
C
Natural Gas
D
Kerosene
Natural gas is less polluting fuel. Natural gas is the cleanest of all the fossil fuels. The global warming emissions from Natural gas combustion are much lower than those from coal or oil.
Correct Answered :
Wrong Answered :
A
Current
B
Resistance
C
Conductance
D
Voltage
The unit of the electric potential difference is volt. One volt is defined as the one joule of energy is required to carry one coulomb of charge. Sometimes, the electric potential difference is referred to as voltage. Therefore, electric potential difference is also known as voltage
Correct Answered :
Wrong Answered :
A
Loudspeaker
B
Solar Cell
C
Wind Turbine
D
Microphone
Electromechanical transducer, any type of device that either converts an electrical signal into sound waves (as in a loudspeaker) or converts a sound wave into an electrical signal (as in the microphone)
Correct Answered :
Wrong Answered :
A
Copper
B
Iron
C
Zinc
D
Potassium
There are 7 essential plant nutrient elements defined as micronutrients boron (B), zinc (Zn), manganese (Mn), iron (Fe), copper (Cu), molybdenum (Mo), chlorine (Cl).
Macronutrients are essential for plant growth and a good overall state of the plant. The primary macronutrients are Nitrogen (N), Phosphorus (P), and Potassium (K). Nitrogen is essential for plant development, since it plays a fundamental role in energy metabolism and protein synthesis
Correct Answered :
Wrong Answered :
A
electrons
B
protons
C
neutrons
D
nucleons
Isotone, any of two or more species of atoms or nuclei that have the same number of neutrons. Thus, chlorine-37 and potassium-39 are isotones, because the nucleus of this species of chlorine consists of 17 protons and 20 neutrons, whereas the nucleus of this species of potassium contains 19 protons and 20 neutrons
Correct Answered :
Wrong Answered :
A
Mho
B
S
C
Ohm
D
Ampere
The unit of the electrical resistance, measured with direct current, is the ohm (abbreviated Ī©), named after the German physicist and mathematician Georg Simon Ohm (1789-1854). According to ohm`s law, the resistance R is the ratio of the voltage U across a conductor and the current I flowing through it: R = U / I.
Correct Answered :
Wrong Answered :
A
Plasma
B
Syrup
C
Platelets
D
Lymph
Plasma, also called blood plasma, the liquid portion of blood. Plasma serves as a transport medium for delivering nutrients to the cells of the various organs of the body and for transporting waste products derived from cellular metabolism to the kidneys, liver, and lungs for excretion.
Correct Answered :
Wrong Answered :
A
Synopsis
B
Impulse
C
Synapse
D
Synaptic Code
Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector).
Correct Answered :
Wrong Answered :
A
Cholorphyll
B
Stomata
C
Guard Cells
D
Leaf Pore
Stomate, also called stoma, plural stomata or stomas, any of the microscopic openings or pores in the epidermis of leaves and young stems.
Correct Answered :
Wrong Answered :
A
Syphills
B
Gonorrhoea
C
Urethra
D
HIV
It is caused by bacteria called Chlamydia trachomatis. It can infect both men and women. Women can get chlamydia in the cervix, rectum, or throat. Men can get chlamydia in the urethra (inside the penis), rectum, or throat.
Correct Answered :
Wrong Answered :
A
Grafting
B
Using Diaphragm
C
Birth control pills
D
Menstruation
Birth control pills (BCPs) contain man-made forms of 2 hormones called estrogen and progestin. These hormones are made naturally in a woman`s ovaries. BCPs can contain both of these hormones, or have progestin only. Both hormones prevent a woman`s ovary from releasing an egg during her menstrual cycle (called ovulation).BCPs are also called oral contraceptives or just "the pill."
Correct Answered :
Wrong Answered :
A
Behind the neck
B
In front of the neck below larynx
C
Near oesophagus
D
Behind frontal lobe
The thyroid gland is located at the front of the neck just below the Adam`s apple (larynx). It is butterfly-shaped and consists of two lobes located either side of the windpipe (trachea). A normal thyroid gland is not usually outwardly visible or able to be felt if finger pressure is applied to the neck.
Correct Answered :
Wrong Answered :
A
Gregor Mendal
B
Isaac Newton
C
Jean-Baptiste Lamarck
D
Thomas Edision
In the early 19th century Jean-Baptiste Lamarck (1744ā1829) proposed his theory of the transmutation of species, the first fully formed theory of evolution.
Correct Answered :
Wrong Answered :
A
Nitrogen
B
Hydrogen
C
Argon
D
Ozone
The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet`s surface. Most importantly, it absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light from the sun (and sun lamps) that has several harmful effects.
Correct Answered :
Wrong Answered :
A
Renal Medulla
B
Renal Cortex
C
Renal Pelvis
D
Renal Hilus
The loop of Henle is a U-shaped or hairpin tube that lies deep in the medulla within a renal pyramid and then loops back towards the cortex. Its primary role is to concentrate the salt in the interstitium.
Correct Answered :
Wrong Answered :
A
Ubiquitous resources
B
Renewable resources
C
Non-renewable resources
D
Human made resources
Those resources which are found everywhere are known as ubiquitous resources. Ubiquitous resources are those natural resources which are available everywhere. Air, water and wind are examples of ubiquitous resources.
Correct Answered :
Wrong Answered :
A
Pond
B
Rain
C
Lakes
D
Rivers
Rainwater is the primary source of water. It is considered as a pure and fresh form of water.
Correct Answered :
Wrong Answered :
A
Uterus
B
Urinary Bladder
C
Ureter
D
Urethra
The penis carries sperm out of the body. There are three tubes inside the penis. One is called the urethra. It is hollow and carries urine from the bladder through the penis to the outside.
Correct Answered :
Wrong Answered :
A
Ecosystem
B
Environment
C
Inheritance
D
Adaptation
The structural and functional unit of the environment is the ecosystem. The ecosystem consists of biotic and abiotic factors and shows interactions among themselves.
Correct Answered :
Wrong Answered :
A
Hybird species are formed
B
New and distinct species are formed
C
shows difference in physical traits
D
evolutionary paths converge
Speciation is an evolutionary process by which a new species comes into being. A species is a group of organisms that can reproduce with one another to produce fertile offspring and is reproductively isolated from other organisms.
Correct Answered :
Wrong Answered :
A
Iliac Vein
B
Portal Vein
C
Hepatic Vein
D
Lateral Vein
Hepatic veins are blood vessels that return low-oxygen blood from your liver back to the heart. The veins are key players in the supply chain that moves the blood that delivers nutrients and oxygen to every cell in your body. A blockage in one of the hepatic veins may damage your liver.
Correct Answered :
Wrong Answered :
A
Auxin
B
Oxalic Acid
C
Abscisic Acid
D
Ethylene
Auxin is a plant hormone produced in the stem tip that promotes cell elongation.
Correct Answered :
Wrong Answered :
A
Nephron
B
Neuron
C
Axon
D
Medulla
Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites).
Correct Answered :
Wrong Answered :
A
Mucor sp
B
Coliform bacteria
C
Amoeba
D
Lactobacillus bacteria
E coli is considered to be the species of coliform bacteria that is the best indicator of faecal pollution and possible presence of disease-causing pathogens,ā said noted environmental scientist and former BHU professor B D Tripathi.
Correct Answered :
Wrong Answered :
A
Amoeba
B
Sheep
C
Leech
D
Yeast
Yeast can respire without oxygen. This type of respiration is known as anaerobic respiration.
Correct Answered :
Wrong Answered :
A
deforestration
B
development of new breeds of forest plants
C
zoological survey of India
D
conservation of natural resources
In the 1970s, an organized resistance to the destruction of forests spread throughout India and came to be known as the Chipko movement. The name of the movement comes from the word "embrace", as the villagers hugged the trees, and prevented the contractors from felling them.
Correct Answered :
Wrong Answered :
A
Autosomes
B
Allosomes
C
Sex chromosomes
D
Androsomes
Autosomes are homologous chromosomes i.e. chromosomes which contain the same genes (regions of DNA) in the same order along their chromosomal arms. The chromosomes of the 23rd pair are called allosomes consisting of two X chromosomes in most females, and an X chromosome and a Y chromosome in most males.
Correct Answered :
Wrong Answered :
A
heat energy
B
mechanical energy
C
chemical energy
D
light energy
The 10% of energy available for transfer from one trophic level to the next in an ecosystem is in the form of chemical energy. The producers capture the energy present in sunlight and convert it into chemical energy which is passed into onto other trophic levels.
Correct Answered :
Wrong Answered :
A
Adrenaline
B
Testosterone
C
Progesterone
D
Oestrogen
The major sex hormone in men is testosterone, which is produced mainly in the testes. The testes are controlled by a small gland in the brain called the pituitary gland, which in turn is controlled by an area of the brain called the hypothalamus. Androgens are crucial for male sexual and reproductive function.
Correct Answered :
Wrong Answered :
A
Sulphuric Acid
B
Photochemical smog
C
Ozone
D
Carbon Monoxide
Pollutants that are formed and emitted directly from particular sources. Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide.
Correct Answered :
Wrong Answered :
A
New Plants
B
New born animals
C
bacteria
D
Fungi
Propagules used to raise growth new plants.
Correct Answered :
Wrong Answered :
A
uriniferous tubule
B
renal pelvis
C
renal corpuscle
D
renal medulla
The Bowman`s capsule and glomerulus together form the renal corpuscle. Blood enters the glomerulus via the afferent arteriole and exits in the efferent arteriole. The endothelium of the glomerulus contains pores, and lies adjacent to the capsule membrane, which also contains pores called filtration slits.
Correct Answered :
Wrong Answered :
A
Oxygen transport
B
Carbon Dioxide transport
C
Clotting of blood
D
Giving immunity to the body
Platelets, or thrombocytes, are small, colorless cell fragments in our blood that form clots and stop or prevent bleeding.
Correct Answered :
Wrong Answered :
A
absorbing light
B
splitting water molecules
C
reduction
D
absorbing sound
Chlorophyll`s job in a plant is to absorb lightāusually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules.
Correct Answered :
Wrong Answered :
A
Ovary
B
Fallopian Tube
C
Placenta
D
Seminal Vesicle
Extra structure which provides nutrition to the embryo is placenta. Placenta is the lifeline between the mother and the baby.
Correct Answered :
Wrong Answered :
A
production of sperms only
B
production of testosterone only
C
production of both sperms and progesterone
D
production of both sperms and testosterone
The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm. Within the testes are coiled masses of tubes called seminiferous tubules. These tubules are responsible for producing the sperm cells through a process called spermatogenesis.
Correct Answered :
Wrong Answered :
A
Forebrain
B
Midbrain
C
Hindbrain
D
Spinal Cord
By far the largest region of your brain is the forebrain (derived from the developmental prosencephalon), which contains the entire cerebrum and several structures directly nestled within it - the thalamus, hypothalamus, the pineal gland and the limbic system.
Correct Answered :
Wrong Answered :
A
Water from roots to the shoot
B
amino acids from roots to the shoot
C
gluten from roots to the shoot
D
carbon dioxide from roots to the shoot
Xylem transports water and nutrients that enter the plant in the root up through the stem and out to all parts of the leaf. Xylem has two types of cells known as tracheids and vessel elements.
Correct Answered :
Wrong Answered :
A
Endoplasmic reticulum
B
Nuclear membrane
C
Chromosomes
D
Mitrochondria
A
Kidney
B
Brain
C
Thoracic cavity
D
Neck
The pituitary gland or hypophysis is a small gland about 1 centimeter in diameter or the size of a pea. It is nearly surrounded by bone as it rests in the sella turcica, a depression in the sphenoid bone. The gland is connected to the hypothalamus of the brain by a slender stalk called the infundibulum.
Correct Answered :
Wrong Answered :
A
Good Climate
B
Greenhouse effect
C
Deforestation
D
Ice formation
Global warming is the unusually rapid increase in Earth`s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels
Correct Answered :
Wrong Answered :
A
Ovaries
B
Ovules
C
styles
D
stigma
A carpel is the female reproductive part of the flower ācomposed of ovary, style, and stigmaā and usually interpreted as modified leaves that bear structures called ovules, inside which egg cells ultimately form.
Correct Answered :
Wrong Answered :
A
Binary fission
B
Multiple fission
C
vegetative propagation
D
Budding
When food is plentiful, many Hydra reproduce asexually by budding. The buds form from the body wall, grow into miniature adults and break away when mature.
Correct Answered :
Wrong Answered :
A
RNA
B
Histones
C
Fossils
D
Chromosomes
The word fossil comes from the Latin word fossus, meaning "having been dug up." Fossils are often found in rock formations deep in the earth. Fossilization is the process of remains becoming fossils.
Correct Answered :
Wrong Answered :
A
220 Days
B
4 weeks
C
4 days
D
120 days
Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days.
Correct Answered :
Wrong Answered :
A
irrelevant to food chains
B
having one kind of food
C
independent arrangement of food chains
D
interconnected arrangement of food chains
A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. Another name for food web is consumer-resource system.
Correct Answered :
Wrong Answered :
A
Phytohormones
B
hypothomes
C
metahormones
D
cytohormones
Plant hormones (also known as phytohormones) are organic substances that regulate plant growth and development.
Correct Answered :
Wrong Answered :
A
Madhya Pradesh
B
Orissa
C
Maharashtra
D
Haryana
Tawa Reservoir is a reservoir on the Tawa River in central India. It is located in Itarsi of Hoshangabad District of Madhya Pradesh state, above Betul district.
Correct Answered :
Wrong Answered :
A
binary fission
B
multiple fission
C
gametic fission
D
vegatative propagaion
If the plants lose their capacity to produce seed, they will carry out reproduction through asexual means, through their vegetative parts like stem, leaf, branch, etc. The formation of new plants from detached vegetative parts is called vegetative propagation.
Correct Answered :
Wrong Answered :
A
RNA
B
enzymes
C
DNA
D
rough endoplasmic reticulum
The information to make proteins is stored in an organism`s DNA. Each protein is coded for by a specific section of DNA called a gene. A gene is the section of DNA required to produce one protein.
Correct Answered :
Wrong Answered :
A
Trypsin
B
Amylase
C
Lipase
D
Pepsin
Saliva contains the enzyme amylase, also called ptyalin, which is capable of breaking down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine.
Correct Answered :
Wrong Answered :
A
oxygen
B
carbon dioxide
C
sulphur dioxide
D
chlorofluorocarbons
Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
Correct Answered :
Wrong Answered :
A
pineal gland
B
pituitary gland
C
thyroid gland
D
adrenal gland
The thyroid is our body`s biggest endocrine gland, and regulates important metabolic processes connected to our heart rate, body temperature and energy levels.
Correct Answered :
Wrong Answered :
A
Rotatory motion
B
Linear motion
C
Vertical motion
D
Circular motion
A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion. As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator.
Correct Answered :
Wrong Answered :
A
Contour Cropping
B
Terrace Cropping
C
Crop rotation
D
Intercopping
The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called Intercropping. In inter cropping the agricultural field is utilised for growing two or more crops in a specific pattern.
Correct Answered :
Wrong Answered :
A
Deforestation
B
Tilling the land
C
Afforestation
D
Removing the surface soil of the earth
Afforestation involves the planting of trees in a drainage basin to increase interception and storage while reducing surface runoff. ... When combined with floodplain zoning, afforestation can be very effective at reducing the risk of flooding. Planting trees help prevent erosion because the roots bind the soil.
Correct Answered :
Wrong Answered :
A
Move slower
B
Become bigger
C
Move faster
D
Become smaller
Moves slower
Correct Answered :
Wrong Answered :
A
Vitamin B
B
Vitamin A
C
Vitamin D
D
Vitamin K
The water-soluble vitamins include ascorbic acid (vitamin C), thiamin, riboflavin, niacin, vitamin B6 (pyridoxine, pyridoxal, and pyridoxamine), folacin, vitamin B12, biotin, and pantothenic acid
Correct Answered :
Wrong Answered :
A
Aspartic acid
B
Ascorbic acid
C
Adipic acid
D
Saccharic acid
Vitamin C, also known as ascorbic acid and L-ascorbic acid, is a vitamin found in food and used as a dietary supplement
Correct Answered :
Wrong Answered :
A
Wet scrubber
B
Cyclone separator
C
Electrostatic precipitator
D
Fabric Filter
Scrubbers are a type of system used to remove harmful materials from industrial exhaust gasses before they are released into the environment. These pollutants are generally gaseous, and when scrubbers are used to specifically remove SOx, they are referred to as flue gas desulfurization.
Correct Answered :
Wrong Answered :
A
Vitamin B2
B
Vitamin B4
C
Vitamin B5
D
Vitamin B3
Niacin, also known as nicotinic acid, is an organic compound and a form of vitamin B3, an essential human nutrient. It can be manufactured by plants and animals from the amino acid tryptophan.
Correct Answered :
Wrong Answered :
A
Primary sewage treatment
B
Secondary sewage treatment
C
Waste water reduction
D
Biochemical reduction
The stage in which the biological processes is used to purify water in a waste-water treatment plants is called secondary sewage treatment
Correct Answered :
Wrong Answered :
A
Conservation of mass
B
Conservation of momentum
C
Conservation of angular momentum
D
Conservation of energy
Bernoulliās principle states that The total mechanical energy of the moving fluid comprising the gravitational potential energy of elevation, the energy associated with the fluid pressure and the kinetic energy of the fluid motion, remains constant.
Correct Answered :
Wrong Answered :
A
GH
B
TSH
C
Insulin
D
Cortisol
Insulin is a hormone created by your pancreas that controls the amount of glucose in your bloodstream at any given moment. It also helps store glucose in your liver, fat, and muscles.
Correct Answered :
Wrong Answered :
A
high partial pressure of oxygen
B
low partial pressure of oxygen
C
low level of haemoglobin
D
high partial pressure of carbon dioxide
At higher altitudes, the pressure of the air around you (barometric pressure) decreases so there is less oxygen in surrounding air.
Correct Answered :
Wrong Answered :
A
Osteoporosis
B
Annemia
C
Goitre
D
Protein Energy Malnutrition
Osteoporosis is a condition in which bones are fragile and are more susceptible to fractures. Anaemia is a condition in which there is a deficiency of red blood cells or haemoglobin in the blood. It may result due to lack of iron or folic acid. Regular dose of iron and folic acid tablets reduces anaemia. Goitre is a condition in which there is swelling in the neck due to enlarged thyroid gland. Protein-energy malnutrition (PEM) is a condition in which there is deficiency of protein and energy resulting in various disorders like marasmus and kwashiorkor.
Correct Answered :
Wrong Answered :
A
Linear structure
B
tetrahedral structure
C
trigonal planer structure
D
hexagonal multilayer structure
Since graphite is a crystalline solid it can be defined by a basic unit cell. Graphite is hexagonal and therefore is defined by a hexagonal unit cell. ... Since each unit cell contains ācenteredā and āedgeā carbon atoms the unit cell is considered a ācenteredā unit cell as opposed to a primitive unit cell.
Correct Answered :
Wrong Answered :
A
veins and arteries
B
lymph vessels and nodes
C
blood vessels, heart and blood
D
capillaries and veins
Your circulatory system is made up of several parts, including your:
Heart: This muscular organ works to pump blood throughout your body via an intricate network of blood vessels.
Arteries. These thick-walled blood vessels carry oxygenated blood away from your heart.
Veins: These blood vessels carry deoxygenated blood back toward your heart.
Capillaries: These tiny blood vessels facilitate the exchange of oxygen, nutrients, and waste between your circulatory system and your organs and tissues.
Correct Answered :
Wrong Answered :
A
Water vapours
B
Oxygen
C
Nitrous Oxide
D
Methane
A
Amplitude
B
Frequency
C
Pitch
D
Speed
The amplitude of a sound wave determines it relative loudness. In music, the loudness of a note is called its dynamic level. In physics, we measure the amplitude of sound waves in decibels (dB), which do not correspond with dynamic levels.
Correct Answered :
Wrong Answered :
A
Transporting Oxygen
B
Transporting Carbon dioxide
C
Initiating clotting of blood
D
Immunity
Platelets are tiny blood cells that help your body form clots to stop bleeding. If one of your blood vessels gets damaged, it sends out signals to the platelets. The platelets then rush to the site of damage and form a plug (clot) to fix the damage.
Correct Answered :
Wrong Answered :
A
Time
B
Speed
C
Distance
D
Luminosity
Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.
Correct Answered :
Wrong Answered :
A
Natural gas
B
Petroleum
C
Wind Energy
D
Nuclear Energy
Wind Energy
Correct Answered :
Wrong Answered :
A
Mesosphere
B
Stratosphere
C
Thermosphere
D
Troposphere
The ozone layer or ozone shield is a region of Earth`s stratosphere that absorbs most of the Sun`s ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
Correct Answered :
Wrong Answered :
A
Skull Bones
B
Thumb Nails
C
Rib Bones
D
Enamel of Teeth
A
Steel > Wood > Water
B
Steel > Water>Wood
C
Water > Wood >Steel
D
Water > Steel > Wood
Thermal conductivity is defined as the heat flow per unit time. Steel has a higher thermal conductivity than water and wood. [Thermal conductivity of steel = 50.2 w/mk Thermal conductivity of water = 0.6 w/mk Thermal conductivity of wood = 0.12 w/mk]
Correct Answered :
Wrong Answered :
A
10 kgs
B
Less than 10 kgs
C
More than 10 kgs
D
0 kgs
A body weighs more at the poles than at the equator, because the earth is not a perfect square, but it is flattened at the poles. The distance between the equator and the centre of the earth and the poles, therefore the force of gravitation is more at the poles than at the equator, and so it weighs more at the poles than equator.
Correct Answered :
Wrong Answered :
A
Solids
B
Liquids
C
Gases
D
Vacum
In colloquial speech, speed of sound refers to the speed of sound waves in air. However, the speed of sound varies from substance to substance: typically, sound travels most slowly in gases, faster in liquids, and fastest in solids.
Correct Answered :
Wrong Answered :
A
Conduction
B
Condensation
C
Convection
D
Evaporation
If water vapour (gas) is cooled, it changes to water (liquid). This change is called condensing.
Correct Answered :
Wrong Answered :
A
Ammeter
B
Barometer
C
Galvanometer
D
Manometer
A manometer is a device that calculates the pressure of a gas or vapour; some are made up of a U-shaped tube with a moving liquid column.
Correct Answered :
Wrong Answered :
A
Increase
B
Decrease
C
Remain same
D
None of these
If you add salt to water, you raise the waters boiling point, or the temperature at which it will boil. The temperature needed to boil will increase about 0.5 C for every 58 grams of dissolved salt per kilogram of water.
Correct Answered :
Wrong Answered :
A
Joule
B
Ohm
C
volt
D
Newton
As an amount of energy (being transferred), the SI unit of heat is the joule (J).
Correct Answered :
Wrong Answered :
A
2
B
3
C
4
D
5
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. Transistors are one of the basic building blocks of modern electronics. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
Correct Answered :
Wrong Answered :
A
Equal the speed of Light
B
Less than the speed of Light
C
Greater than the speed of Light
D
A or B
Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum. We call this the "speed of light"; nothing can move faster than the speed of light.
Correct Answered :
Wrong Answered :
A
Hydrogen
B
Oxygen
C
Carbon Dioxide
D
Silicon
Hydrogen is the most abundant element in the universe, accounting for about 75 percent of its normal matter, and was created in the Big Bang. Helium is an element, usually in the form of a gas, that consists of a nucleus of two protons and two neutrons surrounded by two electrons.
Correct Answered :
Wrong Answered :
A
Metal
B
Catalyst
C
Alloy
D
Enzymes
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed.
Correct Answered :
Wrong Answered :
A
190
B
210
C
230
D
250
The human body contains many salts, of which sodium chloride (AKA common table salt) is the major one, making up around 0.4 per cent of the bodys weight at a concentration pretty well equivalent to that in seawater.
Correct Answered :
Wrong Answered :
A
Power of Hydrogen
B
Possibility of Hydrogen
C
Population of Hydrogen
D
Position of Hydrogen
The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance.
Correct Answered :
Wrong Answered :
A
Impure
B
Raw
C
Pure
D
Refined
Blister copper is partly purified copper with a blistered surface formed during smelting due to the release of gas during cooling.
Correct Answered :
Wrong Answered :
A
Water
B
Fats
C
Both A and B
D
None of these
Vitamin A, also known as retinol, is a fat-soluble vitamin traditionally associated with vision and eye health. The most abundant dietary sources of vitamin A are liver, fish liver oil and butter.
Correct Answered :
Wrong Answered :
A
Water
B
Fats
C
Bomb
D
None of these
There are nine water-soluble vitamins: the B vitamins -- folate, thiamine, riboflavin, niacin, pantothenic acid, biotin, vitamin B6, and vitamin B12 -- and vitamin C. Deficiency of any of these water-soluble vitamins results in a clinical syndrome that may result in severe morbidity and mortality.
Correct Answered :
Wrong Answered :
A
Scurvy
B
Rickets
C
Night Blindness
D
Beri Beri
Severe lack of vitamin D causes rickets, which shows up in children as incorrect growth patterns, weakness in muscles, pain in bones and deformities in joints. This is very rare. However, children who are deficient in vitamin D can also have muscle weakness or sore and painful muscles.
Correct Answered :
Wrong Answered :
A
Smaller number of Red Blood Cells
B
Larger number of Red Blood Cells
C
Smaller number of White Blood Cells
D
Larger number of White Blood Cells
People living in high altitudes (like mountains) usually have a larger number of Red Blood Cells.
Correct Answered :
Wrong Answered :
A
5
B
7
C
6
D
6.5
The average adult has about 1.2 to 1.5 gallons (4.5 to 5.5 liters) of blood circulating inside their body.
Correct Answered :
Wrong Answered :
A
Measles
B
Chicken Pox
C
Beri Beri
D
Diphtheria
Diphtheria is an infection caused by strains of bacteria called Corynebacterium diphtheriae that make toxin.
Correct Answered :
Wrong Answered :
A
Leprosey
B
Tetany
C
Tetanus
D
Actinomycosis
Risus sardonicus or rictus grin is a highly characteristic, abnormal, sustained spasm of the facial muscles that appears to produce grinning. It may be caused by tetanus.
Correct Answered :
Wrong Answered :
A
Oak
B
Pine
C
Banyan
D
Palm
Banyan
Correct Answered :
Wrong Answered :
A
Copper
B
Aluminum
C
Lead
D
Tungsten
Tungsten
Correct Answered :
Wrong Answered :
A
Oxygen
B
Hydrogen Sulphide
C
Carbox dioxide
D
Nitrogen
Hydrogen Sulphide
Correct Answered :
Wrong Answered :
A
Phosphorous
B
Bromine
C
Chlorine
D
Helium
Bromine is a chemical element with symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine.
Correct Answered :
Wrong Answered :
A
Copper
B
Magnesium
C
Iron
D
Calcium
One such chelate is chlorophyll, the green pigment of plants. In chlorophyll the central ion is magnesium, and the large organic molecule is a porphyrin. The porphyrin contains four nitrogen atoms that form bonds to magnesium in a square planar arrangement.
Correct Answered :
Wrong Answered :
A
Graphite
B
Silicon
C
Charcoal
D
Phosphorous
Graphite
Correct Answered :
Wrong Answered :
A
Tin
B
Mercury
C
Lead
D
Zinc
A
Nitrogen
B
Hydrogen
C
Carbon dioxide
D
Oxygen
Incandescent light bulbs are filled with an inert gas like nitrogen, argon, or krypton - so that the filament doesn`t catch fire.
Correct Answered :
Wrong Answered :
A
Sodium Carbonate
B
Calcium Bicarbonate
C
Sodium Bicarbonate
D
Calcium Carbonate
A
Silicon Dioxide
B
Germanium Oxide
C
A mixture of Germanium Oxide and Silicon dioxide
D
Sodium Silicate
A
Methane
B
Nitrous oxide
C
Carbon dioxide
D
Hydrogen
The list of Green House Gases are as follows: 1) Water vapor 2) Carbon dioxide 3) Methane 4) Nitrous oxide 5) Ozone 6) Chlorofluorocarbons. Hydrogen is not a Green House Gas.
Correct Answered :
Wrong Answered :
A
Black Solid
B
Red Liquid
C
Colourless Gas
D
Highly Inflammable Gas
Red Liquid
Correct Answered :
Wrong Answered :
A
Graphite
B
Silica
C
Iron Oxide
D
Diamond
Graphite is structurally composed of planes of polycyclic carbon atoms that are hexagonal in orientation. The distance of carbon atoms between planes is longer and therefore the bonding is weaker. Graphite is best suited for lubrication in air. It is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant. This slippery quality also makes graphite a good material for pencil lead because it easily sloughs off onto paper. Graphite is bonded by covalent bond, thus, it is helf by weak intermolecular forces. Since it has weak intermolecular forces, graphite would be slippery and soft enough to act as a lubricant.
Correct Answered :
Wrong Answered :
A
Argon
B
Xenon
C
Helium
D
Krypton
A
Osmosis
B
Deliquescence
C
Efflorescence
D
Desiccation
A
3%
B
3.5%
C
2.5%
D
2%
A
Without any change in the weight of the nail
B
With decrease in the weight of the nail
C
With increase in the weight of the nail
D
Without any change in colour or weight of the nail
A
Lead
B
Chromium
C
Zinc
D
Tin
A
Coke is the hardest, graphite is the softest
B
Diamond is the hardest, coke is the softest
C
Diamond is the hardest, graphite is the softest
D
Diamond is the hardest, lamp black is the softest
A
Transition metals
B
Main group metals
C
Alkali metals
D
Rare metals
A
Deuterium oxide
B
PH7
C
Rain water
D
Tritium oxide
A
Hydrogen
B
Carbon
C
Sulphur
D
Oxygen
Hydrogen
Correct Answered :
Wrong Answered :
A
Black paint
B
PVC
C
Teflon
D
Polystyrene
Teflon
Correct Answered :
Wrong Answered :
A
Allotrope
B
Isomers
C
Isomorphs
D
Isotopes
Allotrope
Correct Answered :
Wrong Answered :
A
Medicine
B
Fertilizer
C
Salt
D
Glass
Fertilizer
Correct Answered :
Wrong Answered :
A
Sodium Carbonate
B
Alum
C
Potassium Permanganate
D
Lime
Sodium Carbonate
Correct Answered :
Wrong Answered :
A
Camphor
B
Sulphur
C
Common salt
D
Sugar
Sugar
Correct Answered :
Wrong Answered :
A
Lithium
B
Sodium
C
Francium
D
Cerium
The only liquid elements at standard temperature and pressure are bromine (Br) and mercury (Hg). Although, elements caesium (Cs), rubidium (Rb), Francium (Fr) and Gallium (Ga) become liquid at or just above room temperature.
Correct Answered :
Wrong Answered :
A
Petrol
B
Alcohol
C
Water
D
Kerosene
Kerosene
Correct Answered :
Wrong Answered :
A
Nitrous Oxide
B
Carbon monoxide
C
Sulphur dioxide
D
Hydrogen peroxide
Nitrous Oxide
Correct Answered :
Wrong Answered :
A
Germanium
B
Carbon
C
Silicon
D
Sulphur
Carbon
Correct Answered :
Wrong Answered :
A
Methane, Ethane and Hexane
B
Ethane, Hexane and Nonane
C
Methane, Hexane and Nonane
D
Methane, Butane and Propane
Methane, Butane and Propane
Correct Answered :
Wrong Answered :
A
Compound
B
Element
C
Electrolyte
D
Mixture
Mixture
Correct Answered :
Wrong Answered :
A
Nitrogen
B
Helium
C
Oxygen
D
Argon
Helium
Correct Answered :
Wrong Answered :
A
Copper
B
Chromium
C
Lead
D
Cadmium
Lead
Correct Answered :
Wrong Answered :
A
Mercury
B
Lithium
C
Lead
D
Silver
Lithium
Correct Answered :
Wrong Answered :
A
It has a high specific heat
B
It has no colour
C
It has a high dipole moment
D
It has a high boiling point
It has a high dipole moment
Correct Answered :
Wrong Answered :
A
Radium
B
Zinc
C
Uranium
D
Mercury
A
Ruby
B
Sapphire
C
Emerald
D
Diamond
Diamond
Correct Answered :
Wrong Answered :
A
Decibel
B
Coulomb
C
Hum
D
Cycles
Decibel
Correct Answered :
Wrong Answered :
A
Sound
B
Depth
C
Frequency
D
Distance
Depth
Correct Answered :
Wrong Answered :
A
Speed of aeroplanes
B
Speed of light
C
Stellar distances
D
Speed of rockets
Stellar distances
Correct Answered :
Wrong Answered :
A
White dwarfs
B
Quartz clocks
C
Atomic clocks
D
Pulsars
Atomic clocks
Correct Answered :
Wrong Answered :
A
0.84
B
0.5
C
1.6
D
0.62
0.62
Correct Answered :
Wrong Answered :
A
Power used by a current of one ampere
B
Electromagnetic radio wave frequencies
C
Voltage
D
Electric resistance
Electromagnetic radio wave frequencies
Correct Answered :
Wrong Answered :
A
746 watts
B
748 watts
C
756 watts
D
736 watts
746 watts
Correct Answered :
Wrong Answered :
A
Work
B
Power
C
Electricity
D
Current
Power.
Correct Answered :
Wrong Answered :
A
Commutator
B
Anemometer
C
Ammeter
D
Voltmeter
Ammeter
Correct Answered :
Wrong Answered :
A
Thorium
B
Graphite
C
Radium
D
Heavy water (D2O)
A moderator is a material used in a nuclear reactor to slow down the neutrons produced from fission. By slowing the neutrons down the probability of a neutron interacting with Uranium-235 nuclei is greatly increased thereby maintaining the chain reaction.
Heavy water (D2O) is used as a moderator in nuclear reactor. It containing significantly more than the natural proportions (one in 6,500) of heavy hydrogen (deuterium, D) atoms to ordinary hydrogen atoms. Heavy water is used as a moderator in some reactors because it slows down neutrons effectively and also has a low probability of absorption of neutrons.
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A
Electrons and protons
B
Electrons only
C
Protons only
D
Electrons and Nuclei
Electrons and Nuclei
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A
Thompson
B
Bohr
C
Rutherford
D
Einstein
Rutherford
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A
Gravitational forces
B
Exchange forces
C
Coulombic forces
D
Magnetic forces
Exchange forces
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A
Natural rubber
B
Starch
C
Cellulose
D
None of these
Natural rubber
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A
Carbon
B
Silicon
C
Sulphur
D
Phosphorous
Sulphur
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Wrong Answered :
A
Displacement
B
Acceleration
C
Inertia
D
Velocity
Inertia
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Wrong Answered :
A
Bacteria
B
Fungus
C
Helminth
D
Virus
Virus
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A
Phon
B
Deci
C
Decibel
D
Decimal
Decibel
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A
Ionosphere
B
Ozone layer
C
Troposphere
D
Magnetosphere
Ozone layer
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A
Celsius
B
Fahrenheit
C
Kelvin
D
All of these
Kelvin
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