Question

True or false

1) Ultraviolet rays damage the ozone layer of the atmosphere.
2) Suspended tiny particles remaining in air for long periods reduce visibility.
3) It is advisable to use lead containing petrol in vehicles.
4) CO² in the atmosphere traps reflected radiation from the earth's surface and does not allow it to escape into space.
5) The Gangotri glacier in the Himalayas has started melting due to global warming.
6) Boiling or chlorination of water kills diseases causing micro-organisms present in water.
7) Clean and transparent water is safe to drink.​

Answer 1

Answer:

1. False.

2. true.

3.

4.true

5. true

6. true

7. true