Rajasthan Board RBSE Class 11 Biology Chapter 41 Environmental Pollution

Rajasthan Board RBSE Class 11 Biology Chapter 41 Environmental Pollution RBSE Class 11 Biology Chapter 41 Multiple Choice Objective Questions Question 1. The main reason of pollution in Metropolitan (big) cities – 1. Domestic fuel 2. Vegetation 3. Increased population 4. Motor vehicles Question 2. Sound pollution is measured in – 1. kg 2. dB … Read more