SPM stands for

1. Suspended Poisonous Matter
2. Soluble Poisonous Material
3. Smoky Particulate Matter
4. Suspended Particulate Matter

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 the type of environmental pollution caused here.

1. Soil 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