Which of the following chemical compounds is mainly responsible for the formation of ozone hole?

1. CO₂
2. CFC
3. SO₂
4. NO

Study the picture and identify which type of environmental pollution is mainly caused by the activity practised here.

1. Noise pollution
2. Water pollution
3. Air pollution
4. Radioactive pollution

Thermal pollution is caused by

1. the discharge of fertilizer on the Water body
2. the discharge of domestic waste in the water body
3. the discharge of hot water of thermal power plants in the water body.
4. All the above

Which of the following is not a man-made source of radioactive pollutant?

1. Wastes from the nuclear power stations
2. Mining & processing of Uranium Ore
3. Cosmic rays
4. X-ray wastes