General Science #27 Multiple Choice Questions

GENERAL SCIENCE #27

MULTIPLE CHOICE QUESTIONS

1. Which gas is the major pollutant of air?

(a) Carbon monoxide

(b) Nitrogen

(c) Oxygen

(d) Propane

Answer: (a)

2. The increase in concentration of which gas is not responsible for Global Warming?

(a) Sulphur dioxide

(b) Nitrogen

(c) Carbon dioxide

(d) Methane

Answer: (b)

3. In which year Ganga Action Plan was launched?

(a) 1979

(b) 1982

(c) 1984

(d) 1985

Answer: (d)

4. What radiations are absorbed by CO₂?

(a) Ultrared radiations

(b) Infrared radiations

(c) Ultraviolet radiations

(d) None of the above

Answer: (b)

5. Which element is present in the exhaust of automobiles?

(a) Lead

(b) Calcium

(c) Chromium

(d) Magnesium

Answer: (a)

6. The phenomenon of marble cancer is due to which of the following?

(a) Soil particles

(b) Fog

(c) CFCs

(d) Acid rain

Answer: (d)

7. What are called the solid or liquid particles dispersed in the air?

(a) Oxides

(b) Acids

(c) Hydrocarbons

(d) Aerosols

Answer: (d)

8. Which type of pollution is likely to affect Taj Mahal in Agra to a greater extent?

(a) Air pollution

(b) Soil pollution

(c) Water pollution

(d) Noise pollution

Answer: (a)

9. The major causes of air pollution include which of the following?

(a) Burning of coal and petroleum

(b) Afforestation

(c) Deforestation

(d) Recycling of paper

Answer: (a)

10. Bhopal tragedy was caused due to which of the following?

(a) Air pollution

(b) Emission of poisonous gas

(c) Water pollution

(d) Leakage of poisonous gas

Answer: (d)

11. Which of the following contents is most harmful to aquatic animals?

(a) Heavy metal ions

(b) Sodium ions

(c) Potassium ions

(d) Chloride ions

Answer: (a)

12. Water containing high salt concentration can be purified by which of the following?

(a) Boiling

(b) UV irradiation

(c) Filtration

(d) Reverse osmosis

Answer: (d)

13. Which of the following is a non-biodegradable pollutant?

(a) Sulphur dioxide

(b) DDT

(c) Nitrogen oxide

(d) Hydrogen oxide

Answer: (b)

14. Which of the following is major source of water pollution?

(a) Industrial wastes

(b) Untreated sewage

(c) Use of fertilisers

(d) Toxic metals

Answer: (b)

15. Which of the following techniques of irrigation should be used to save water?

(a) Water wheel

(b) Canal irrigation

(c) Drip irrigation

(d) Lift irrigation

Answer: (c)

16. Carbon monoxide in vehicle exhaust causes which of the following?

(a) Increased oxygen carrying capacity of RBCs

(b) Reduced Nitrogen carrying capacity of RBCs

(c) Reduced oxygen carrying capacity of RBCs

(d) Reduced carbon carrying capacity of RBCs

Answer: (c)

17. Which gas is used in refrigerating appliance causing serious damage to ozone?

(a) MFCs

(b) CFCs

(c) LPCs

(d) DPCs

Answer: (b)

18. Acid rain mainly contains which of the following?

(a) Sodium chloride

(b) Sulphur dioxide and nitrogen dioxide

(c) Hydrochloric acid

(d) Carbon tetra chloride

Answer: (b)

19. Marble cancer is caused by which of the following?

(a) Bacteria

(b) Virus

(c) Acid rain

(d) Alkali rain

Answer: (c)

20. Which of the following is a commonly used chemical method for purifying water?

(a) Brominization

(b) Flourination

(c) Filtration

(d) Chlorination

Answer: (d)