Environmental Chemistry – Pollution and Control MCQs

1. What is the primary cause of acid rain?
(A) Carbon dioxide
(B) Methane
(C) Sulphur dioxide and nitrogen oxides
(D) Ammonia

2. Which gas is mainly responsible for global warming?
(A) Nitrogen
(B) Oxygen
(C) Carbon dioxide
(D) Sulphur dioxide

3. Which pollutant is most commonly associated with the depletion of the ozone layer?
(A) Carbon monoxide
(B) Chlorofluorocarbons (CFCs)
(C) Methane
(D) Nitrous oxide

4. What is the effect of water pollution on aquatic life?
(A) Increases biodiversity
(B) Enhances oxygen levels
(C) Reduces dissolved oxygen and harms organisms
(D) Improves fish growth

5. Which of the following is a biodegradable pollutant?
(A) Plastic
(B) Pesticides
(C) Sewage
(D) Lead

6. The Greenhouse Effect is caused by the trapping of:
(A) Oxygen
(B) Light
(C) Infrared radiation
(D) Ultraviolet rays

7. Which method is commonly used to control industrial air pollution?
(A) Landfilling
(B) Cyclone separator
(C) Sewage treatment
(D) Composting

8. Which of the following is not a greenhouse gas?
(A) Water vapor
(B) Oxygen
(C) Methane
(D) Nitrous oxide

9. What is the main source of indoor air pollution in rural areas?
(A) Industrial waste
(B) Smoking
(C) Use of biomass fuels
(D) Air conditioners

10. What is the best method for controlling plastic pollution?
(A) Burning plastics
(B) Using more synthetic materials
(C) Promoting recycling and biodegradable alternatives
(D) Increasing plastic production