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1. A hanging balloon blown up with air becomes smaller when the air in a room becomes cooler because the molecules of air

A

Move slower

B

Become bigger

C

Move faster

D

Become smaller

2. Which of the following is a water soluble vitamin?

A

Vitamin B

B

Vitamin A

C

Vitamin D

D

Vitamin K

3. Which of the following acids is a vitamin C?

A

Aspartic acid

B

Ascorbic acid

C

Adipic acid

D

Saccharic acid

4. For the removal of gaseous pollutants which of the following devices is suitable?

A

Wet scrubber

B

Cyclone separator

C

Electrostatic precipitator

D

Fabric Filter

5. Niacin is the name of

A

Vitamin B2

B

Vitamin B4

C

Vitamin B5

D

Vitamin B3

6. Biological processes is used to purify water in a waste water treatment plants, this stage is called

A

Primary sewage treatment

B

Secondary sewage treatment

C

Waste water reduction

D

Biochemical reduction

7. Bernoulli`s principle is based on which one among the following laws?

A

Conservation of mass

B

Conservation of momentum

C

Conservation of angular momentum

D

Conservation of energy

8. Which one of the following hormones is essential for the uptake of glucose by cells in the human body?

A

GH

B

TSH

C

Insulin

D

Cortisol

9. Altitude sickness is caused at high altitude due to

A

high partial pressure of oxygen

B

low partial pressure of oxygen

C

low level of haemoglobin

D

high partial pressure of carbon dioxide

10. After diagnosis of a disease in a person, the doctor advices the patient iron and folic acid tablets

A

Osteoporosis

B

Annemia

C

Goitre

D

Protein Energy Malnutrition

11. Graphite is a good conductor of electricity. It is because

A

Linear structure

B

tetrahedral structure

C

trigonal planer structure

D

hexagonal multilayer structure

12. Circulatory system is made of

A

veins and arteries

B

lymph vessels and nodes

C

blood vessels, heart and blood

D

capillaries and veins

13. Which of the following gases is not responsible for global warming?

A

Water vapours

B

Oxygen

C

Nitrous Oxide

D

Methane

14. Which attribute of sound wave is related to the loudness of sound?

A

Amplitude

B

Frequency

C

Pitch

D

Speed

15. In blood platelets are required for

A

Transporting Oxygen

B

Transporting Carbon dioxide

C

Initiating clotting of blood

D

Immunity

16. Light year is a measure of

A

Time

B

Speed

C

Distance

D

Luminosity

17. Which of the following is source of renewable energy?

A

Natural gas

B

Petroleum

C

Wind Energy

D

Nuclear Energy

18. Ozone layer is the part of

A

Mesosphere

B

Stratosphere

C

Thermosphere

D

Troposphere

19. Which among the following is the hardest part of our body?

A

Skull Bones

B

Thumb Nails

C

Rib Bones

D

Enamel of Teeth

20. Which one among the following statements about thermal conductivity is correct?

A

Steel > Wood > Water

B

Steel > Water>Wood

C

Water > Wood >Steel

D

Water > Steel > Wood