Pollution of Air and Water-Important Questions

1.  What is the percentage of nitrogen in air?

2.  Which gases are responsible for acid rain?

3.  Which phenomena cause global warming?

4.  What do you mean by portable water

5.  Name one element present in exhaust of automobiles.

6.  What do you mean by marble cancer?

7.  When was Ganga action plan launched?

8.  What are CFCs? How do they create pollution?

9.  Which radiation is absorbed by CO₂?

10.  Which rays are harmful for us?