- 1(current)
Q. No.In the absence of greenhouse gases -
| 1. | Life on earth would be impossible. |
| 2. | Average temperature of the earth will decrease drastically. |
| 3. | There will be no effect on Earth |
| 4. | Both (1) and (2) |
Subtopic: Â Air Pollution - Greenhouse Effect |
 84%
From NCERT
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Tropospheric pollution arises due to the presence of:
| 1. | SO2, SO3, and NO2, in the lowest layer of the atmosphere. |
| 2. | SO2, SO3, and NO2, in the uppermost layer of the atmosphere. |
| 3. | SO2, SO3, and NO2, in the middle layer of the atmosphere. |
| 4. | All of the above. |
Subtopic: Â Air Pollution - Greenhouse Effect |
 74%
From NCERT
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Gases responsible for greenhouse effect are :
1. Carbon dioxide (CO2)
2. Ozone (O3)
3. Nitrous oxide (N2O)
4. All of the above.
Subtopic: Â Air Pollution - Greenhouse Effect |
 90%
From NCERT
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- 1(current)
Q. No.
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