Pollution:
1. Any undesirable change in physical characteristics of air, land water and soil
2. Any undesirable change in biological characteristics of air, land water and soil
3. Any undesirable change in physical, chemical and biological characteristics of air, land water and soil
4. Any undesirable change in physical and chemical characteristics of air, land water and soil

Agents that bring undesirable change in biological, physical and chemical environment is called

Environment Protection Act protects and improves the quality of

Which of the following is a secondary pollutant?

$1.$ $\mathrm{CO}$

$2.$ ${\mathrm{CO}}_2$

$3.$ ${\mathrm{SO}}_2$

$4.$ ${\mathrm{O}}_3$

Match correctly the following and choose the correct option

(i) Environment Protection Act                                A. 1974

(ii) Air Prevention & Control of Pollution Act         B. 1987

(iii)Water Act                                                              C. 1986

(iv)Amendament of Air Act to include noise          D. 1981

The correct matches is;

1. i-C, ii-D, iii-A, iv-B

2. i-A, ii-C, iii-B, iv-D

3. i-D, ii-A, iii-B, iv-C

4. i-C, ii-D, iii-B, iv-A