- 1(current)
Q. No.Since the pre-industrial period, global average land temperatures have increased almost twice as fast as global average surface temperatures. This may primarily be due to:
| 1. | Higher ocean area than land area receiving more incident solar radiation |
| 2. | High heat capacity of water |
| 3. | Industries being located on land |
| 4. | Burning of fossil fuels by automobiles on the land |
Arcata Wildlife Sanctuary in Arcata, California is also a/an:
1. innovative sewer management system
2. tiger reserve
3. nuclear waste disposal site
4. ecological hotspot
If there was no green house effect:
| 1. | Earth would have been too cold for many organisms to survive |
| 2. | The diversity on Earth would have been much higher |
| 3. | The primary productivity would have been much higher |
| 4. | Earth would not have any atmosphere |
The normal greenhouse effect is necessary for survival of life on Earth as it has raised the temperature of Earth’s surface by:
| 1. | - 18°C | 2. | 15°C |
| 3. | 33°C | 4. | 50°C |
Radiatively active gases do not include:
1. Methane
2. Ammonia
3. Nitrous oxide
4. Chloroflouro carbons
An abnormal warming of surface ocean waters in the eastern tropical Pacific is termed as:
| 1. | El Nino | 2. | La Nina |
| 3. | ENSO | 4. | Ocean hazard |
| Assertion (A): | Greenhouse effect is harmful to life on earth. |
| Reason (R): | It leads to increased risk in human beings for the development of certain cancers. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
The following pie chart shows the relative contribution of radiatively active gases to greenhouse effect. The contribution of N2O is shown by:
| 1. | A |  |
| 2. | B | |
| 3. | C | |
| 4. | D |
| I: | The green house effect is a natural phenomenon responsible for heating of earth’s surface and atmosphere. |
| II: | Greenhouse gases absorb short wave UV radiation and emit it again towards the earth. |
| III: | During the past century, the temperature of earth has increased by 60C |
| 1. | Only Statement I |
| 2. | Only Statement III |
| 3. | Only Statement II and Statement III |
| 4. | Only Statement I and Statement II |
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Q. No.
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