Environmental Studies Multiple Choice Questions and Answers

1. Lowest layer of atmosphere is called

1. Thermosphere
2. Stratosphere
3. Troposphere
4. Mesosphere

2. Major cause of increment in population growth

1. decrease in birth rate
2. decrease in mortality rate
3. illiteracy
4. none of the above

3. Most stable ecosystem is

1. Forest
2. Desert
3. Ocean
4. Mountain

4. Nitrogen gets oxidized into

1. Nitrates and ammonia
2. Ammonia and urea
3. Urea and nitrite
4. Nitrates and nitrites

5. Noise is measured using sound meter and the unit is

1. Hertz
2. Decibel
3. Joule
4. Sound

6. Nutrients are recycled in ecosystem by

1. Biogeochemical cycle
2. Energy flow
3. Producers
4. Consumers

7. Region where fresh water meets salt water is called

1. Sea
2. Lake
3. River
4. Estuarine

8. Sequence of eating and being eaten in a ecosystem is called

1. Food web
2. Natural cycle
3. Ecological Pyramid
4. Food chain

9. Study of trends in human population growth and prediction of future growth is called

1. Demography
2. Biography
3. paleography
4. psychology

10. The concentration of which gas is highest in our environment?

1. Oxygen
2. Hydrogen
3. Nitrogen
4. Carbon dioxide