Q. No.Match each item in Column I with one item in Column II and chose your answer from the codes given below.
Column I
Column II
I.
Environment Act
1.
1986
II.
Montreal protocol
2.
1987
III.
Earth summit
3.
1992
IV.
Kyoto protocol
4.
1997
Codes:
Options:
I
II
III
IV
1.
1
2
3
4
2.
2
1
4
3
3.
2
1
3
4
4.
1
2
4
3
Match each item in Column I with one item in Column II regarding the relative contribution of different greenhouse gases to global warming and choose your answer from the codes given below.
| Column I | Column II | ||
| I. | Carbon dioxide | 1. | 60% |
| II. | Methane | 2. | 20% |
| III. | Nitrous oxide | 3. | 14% |
| IV. | CFCs | 4. | 06% |
Codes:
| Options: | I | II | III | IV |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 1 | 2 | 4 | 3 |
Consider the following statements:
| I. | Catalytic converters are fitted into automobiles for reducing the emission of poisonous gases. |
| II. | They convert unburnt hydrocarbons to CO2 and H2O, and CO and NO to CO2 and N2 respectively. |
| III. | Vehicles equipped with catalytic converters should use leaded petrol. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Consider the following statements:
| I. | Noise was added as an air pollutant to the Air (Prevention and Control of Pollution) Act in 1987. |
| II. | Montreal protocol was signed in 1987 to control the emission of ozone-depleting substances. |
| III. | The Earth Summit for the conservation of biodiversity and sustainable utilization of its benefits was held in 1992. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Consider the following statements:
| 1. | The “bad” ozone is the ozone that is formed in the troposphere. |
| 2. | The “good ozone” in the stratosphere acts as a shield against harmful UV radiation. |
| 3. | UV-A radiations can cause skin cancers and snow-blindness cataracts. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
The richness of nutrients in a lake or other body of water, frequently due to run-off from the land, which causes a dense growth of plant life is called:
1. dystrophic
2. oligotrophic
3. eutrophic
4. ecotrophic
Which of the following is not a consequence of deforestation?
| 1. | An increase in atmospheric carbon dioxide as trees can hold a lot of carbon in their biomass. |
| 2. | Loss of biodiversity due to habitat destruction. |
| 3. | A wetter climate as trees can hold a lot of water. |
| 4. | Soil erosion due to loss of the protective layer of vegetation. |
Slash and burn agriculture leads to nutrient-depleted soils and deforestation if:
1. crash crops are implanted rather than cereals
2. it is practiced in a sufficiently larger area
3. some useful trees are retained by the farmers
4. sufficient time is not allowed for the land to recover
Ozone hole is:
| 1. | a partial gap in the stratospheric ozone layer over Antarctica |
| 2. | a partial gap in the stratospheric ozone layer over Arctic |
| 3. | thinning of ozone layers over polar regions |
| 4. | excessive buildup of lower troposphere ozone |
Burying the radioactive wastes is not acceptable to many people as:
1. there is a risk of groundwater contamination
2. it may explode
3. it will harm the buried dead bodies
4. it may get accumulated in vegetation
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