List-I | List-II | ||
(A) | Deforestation | (I) | Responsible for heating of Earth's surface and atmosphere |
(B) | Reforesation | (II) | Conversion of forested areas to non-forested areas |
(C) | Green-house effect | (III) | Natural ageing of lake by nutrient enrichment of its water |
(D) | Eutrophication | (IV) | Process of restoring a forest that once existed but was removed |
Options: | (A) | (B) | (C) | (D) |
1. | IV | III | II | I |
2. | I | II | III | IV |
3. | III | I | II | IV |
4. | II | IV | I | III |
Which of the following pairs of gases is mainly responsible for green house effect?
1. Carbon dioxide and methane
2. Ozone and Ammonia
3. Oxygen and Nitrogen
4. Nitrogen and Sulphur dioxide
Global warming can be controlled by:
1. | Reducing reforestation, increasing the use of fossil fuel. |
2. | Increasing deforestation, slowing down the growth of the human population |
3. | Increasing deforestation, reduces the efficiency of energy usage. |
4. | Reducing deforestation, cutting down the use of fossil fuel. |
Which one of the following is a wrong statement?
1. | Most of the forests have been lost in tropical areas |
2. | Ozone in upper part of atmosphere is harmful to animals |
3. | Greenhouse effect is a natural phenomenon |
4. | Eutrophication is a natural phenomenon in freshwater bodies |
Which one of the following pairs of gases are the cause of 'Greenhouse effect'?
1.
2.
3.
4.
The two gases making the highest relative contribution to the greenhouse gases are:
1.
2.
3.
4.
1. CFCs 14%, CH4 20%
2. CO2 40%, CFCs 30%
3. N2O 6%, CO2 86%
4. CH4 20%, N2O 18%
Green house effect is:
1. Gardening outside the house
2. Global cooling
3. Global warming
4. Green colour house
If is absent in the atmosphere of the earth, then:
1. Temperature will decrease
2. Temperature will increase
3. Plants will flourish well
4. No effect
Besides CH4 and CO2, another green house gas is:
1. SO2
2. NH3
3. N2O
4. CFC