Question

1. Acid rain causes extensive damage to vegetation and aquatic life.  

(i) What do you mean by acid rain? 

(ii) Name the chemicals responsible for acid rain. 

2. List gases which are responsible for greenhouse effect.

Answer 1

1.(i) When the pH of the rain water drops below 5.6, it is called acid rain.

(ii) Oxides of nitrogen and sulphur mist of hydrochloric acid and phosphoric acid etc.

2. Such as carbon dioxide, methane, ozone, chlorofluorocarbon compounds (CFC).