List two main sources of acid rain.

List four human activities which contribute to air pollution.

What is the importance of catalytic converters?

What is the role of automobile in air pollution?

Define global warming.

1. Describe Sources of air pollutants
2. Describe acid rain and its effects. Ans: See theory
3. Describe global warming Ans: See theory
4. What is Ground level ozone? Explain.
5. Why is global warming often referred to as the greenhouse effect? Justify your answer.
6. Sulphur dioxide is a common pollutant from burning coal. State two effects caused by this pollutant.

1. Dibenzothiophene (C12H8S) is a common sulphur containing compound of coal. It is responsible for acid rain. Elaborate this statement.
2. There have been various attempts to remove Sulphur from coal before it is burned. Illustrate.
3. Examine the option there are some ways to reduce pollution caused by cars?
4. Certain human activities are responsible for a significant increase in greenhouse effect, argue.
5. As a global citizen, how can you play a part to reduce air pollution at a personal level? Argue.