- 1(current)
Q. No.What is bad ozone?
1. Ozone formed in the troposphere
2. Ozone found in the lower stratosphere
3. Ozone found in the upper stratosphere
4. Ozone formed in the lab
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The thickness of ozone layer is measured in :
1. Centimorgan (cM)
2. Dobson unit
3. Roentgens
4. Lux
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UV rays are highly injurious to living organisms as:
1. they are part of invisible electromagnetic spectrum
2. they cannot be stopped by atmospheric gases
3. they are preferentially absorbed by DNA and proteins
4. they cause dissociation of atmospheric oxygen
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CFC have a continuing effect on ozone layer as:
| 1. | the Cl atoms formed by them only act as catalysts in reactions causing degradation of ozone |
| 2. | the Cl atoms formed by them are used up in reactions causing degradation of ozone |
| 3. | they are being produced in increasing amounts all over the world |
| 4. | they are efficiently absorbed by the atmospheric water vapours |
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The Montreal Protocol was signed in 1987 to:
| 1. | prevent deforestation around the world |
| 2. | control the emission of ozone-depleting substances |
| 3. | control the greenhouse gases |
| 4. | prevent hazards from radioactive nuclear wastes |
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- 1(current)
Q. No.
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