Pollution Causes Multiple Choice Questions with Answers – PDF Download

MCQ 1: Non-toxic, unreactive chemicals used as cooling agents in refrigerators are known as:

1. chloroflouro bicarbonates
2. chloroflourocarbides
3. chloroflourocarbonates
4. chlorofluorocarbon

MCQ 2: Risks of skin cancer is increased if:

1. more sun bathing is done
2. the chlorofluorocarbons are lowered
3. the greenhouse effect is lowered
4. more ultraviolet light penetrates the Earth

MCQ 3: Upon entering through stomata, the leaves get damaged and plant dies. This pollutant is:

1. carbon dioxide
2. lead
3. carbon monoxide
4. sulphur dioxide

MCQ 4: Volcanic eruptions, biological decay and forest fires releases:

1. Carbon monoxide in air
2. carbon dioxide in air
3. sulpher dioxide in air
4. ammonia in air

MCQ 5: Increased melting of ice glaciers may be a result of:

1. greenhouse effect
2. smog formation
3. sun getting closer to the Earth every year
4. moon moving away causing more tidal activities