MCQ on Class 8 Pollution of air and water

1. The primary cause of Taj Mahal marble yellowing is:

2.

Fuels that are incompletely combusted produce …………. gas.

3.

Sunlight can remove all contaminants from water.

4. Which of the following fuels is the least polluting?

5.

………….. is the contamination of water with unwanted and harmful substances.

6.

…………….. is caused by the release of hot water into water bodies.

7.

The presence of undesirable substances in the air is known as …………

8.

CNG is the abbreviation for ……………….

9.

Air pollution should be controlled by encouraging the use of LPG and CNG.

10.

The ozone layer protects us against UV rays.