Environmental Studies Multiple Choice Questions and Answers

1. 21st March is observed as

1. World forest day
2. World environment day
3. World wildlife day
4. World population day

2. 71% of earth surface is covered with:

1. land
2. air
3. water
4. coal

3. According to Thomas Malthus human population increase in

1. arithmetic ratio
2. geometric ratio
3. exponension ratio
4. all above

4. Afforestation is necessary for

1. Soil conservation
2. Soil erosion
3. Well control
4. Low humidity

5. Air pollution is caused by

1. Insecticides
2. Sewage
3. Smoke
4. Loud speakers

6. Atmosphere may extents to a height of about following kms above the earth surface

1. 80 km
2. 8000 km
3. 800 km
4. 8 km

7. Atomospheric ozone layer which protect us from UV-B & C is getting depleted most by addition of

1. Chloro flurocarbon
2. Carbon monooxide
3. Carbon dioxide
4. Sulpur dioxide

8. Chipko movement was started to conserve

1. Forests
2. Grasslands
3. Deserts
4. Soil

9. Consumers are also called

1. Photoautotrophs
2. Saprotrophs
3. Heterotrophs
4. Reducers

10. Conversion of ammonia to nitrite and then nitrate is called

1. Nitrogen fixation
2. De nitrification
3. Nitrification
4. Ammonification