Air pollution

Q. Which of the following are natural sources of air pollution?

1. Volcanoes
2. Forest fires
3. Mining
4. Cosmic dust

Q. Which of these gases is not considered as a pollutant?

1. Chlorofluorocarbons
2. Nitrogen dioxide
3. Carbon dioxide
4. Oxygen

Q.

Enlist the measures that should be taken to reduce air pollution.

Q. Which of these gases is not considered as a pollutant?

1. Chlorofluorocarbons
2. Nitrogen dioxide
3. Carbon dioxide
4. Oxygen

Q. Select the important effects of air pollution among the following options.

1. Change in weather and climatic conditions
2. Ozone depletion
3. Decrease in fertility of soil
4. Global warming

Q. Which of these could be effective measures to control air pollution?

1. Using conventional energy sources
2. Cutting down trees
3. Controlling emission from automobiles
4. Controlling gaseous pollutants