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1. Which of the following is the colorless and odorless air pollutant?

A

Sulphur Dioxide

B

Carbon Monoxide

C

Ozone

D

Nitrous Oxide

2. Black carbon is another name for

A

Soot

B

Smog

C

Smoke

D

Ozone

3. Which of the following is the function of kidney?

A

extract waste from blood

B

maintain blood supply

C

keep blood sarm

D

None of these

4. Different substances have different vapor pressures at a given temperature due to the strength of their ____

A

aerosol

B

intermolecular forces

C

allotrope

D

both aerosol and allotrope

5. Naphthalene is a volatile solid and is best purified by which of the following?

A

Crystallisation

B

Distillation

C

Steam distillation

D

Sublimation

6. During sleep, the blood pressure of human beings _____

A

Increase

B

Decrease

C

First decrease and then increase

D

Remain same

7. The saliva contains an enzyme called ____ that breaks down carbohydrates which is a complex molecule to give sugar.

A

isomerase

B

sucrase

C

kinase

D

salivary

8. The infertile Saline soils contain largely proportion of which of the following?

A

Zinc, Sodium and Magnesium

B

Copper, Sodium and Potassium

C

Sodium, Potassium and Magnesium

D

Bronze, Magnesium and Sulphur

9. ____ is the spontaneous passage or diffusion of water or other  solvents through a semipermeable membrane.

A

Transpiration

B

Osmosis

C

Diffusion

D

Penetration

10. Which of the following processes does not add CO2 to the atmosphere?

A

Volcanic eruption

B

Organic matter decay

C

Photosynthesis

D

All of these

11. Which among the following is/are good conductor of electricity?

A

Graphite

B

Copper

C

Silver

D

All of these

12. Which among the following is also called index of refraction, measure of the bending of a ray of light when passing from one medium into another?

A

Amplitude

B

velocity

C

Refractive index

D

None of these

13. Most toxic metal pollutant of automobile exhaust is which of the following?

A

Cadmium

B

Lead

C

Copper

D

None of these

14. Which among the following causes Typhoid?

A

Anopheles

B

Tubercule bacillli

C

Variola virus

D

Salmonella typhi

15. Most kidney stones are usually in the form of which among the following?

A

Sodium nitrate

B

Zinc oxide

C

Calcium oxalate

D

None of these

16. which micronutrient is body`s main source of energy?

A

Proteins

B

Fats

C

Carbohydrates

D

Vitamins

17. Which vitamin is crucial for the absorption of calcium in the body?

A

Vitamin A

B

Vitamin B12

C

Vitamin C

D

Vitamin D

18. Which hormone regulates blood glucose levels by facilitating the uptake of glucose into cells? 

A

Glucagon

B

Insulin

C

Adrenaline

D

Cortisol

19. What is the main goal of health promotion?

A

Cure diseases

B

Prevent diseasea and enhance health

C

Develop new medications

D

Provide emergency care

20. At what minimum internal temperature should poultry be cooked to ensure it is safe to eat?

A

145o F (63o C)

B

155o F (68o C)

C

165o F (74o C)

D

175o F (79o C)