Q. No.A gas that is not common component of photochemical smog is-
1. Ozone
2. Acrolein
3. Peroxyacetyl nitrate
4. Chlorofluorocarbons
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Green chemistry means such reactions that:
| 1. | Produce colour during reactions |
| 2. | Reduce the use and production of hazardous chemicals. |
| 3. | Are related to the depletion of the ozone layer. |
| 4. | Study the reactions in plants. |
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Among the following, the one that is not a greenhouse gas is:
1. Sulphur dioxide
2. Nitrous oxide
3. Methane
4. Ozone
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The phenomenon in which atmospheric gases trap the heat radiations from the sun near the earth’s surface and keeps it warm is known as-
1. Natural greenhouse effect
2. Tyndall effect
3. Heating effect
4. Joule’s effect
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Pollution can be controlled by-
1. Sewage treatment.
2. Checking atomic blasts.
3. Manufacturing electrically operated vehicles.
4. All of the above.
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If water pollution continues at its present rate, it will eventually :
1. Stop the water cycle.
2. Prevent precipitation.
3. Make oxygen molecules unavailable to water plants.
4. Make nitrate molecules unavailable to water plants.
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Domestic waste will lead to :
1. Biodegradable pollution
2. Nondegradable pollution
3. Thermal pollution of soil
4. Air pollution
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If a lake is contaminated with DDT, it's highest concentration would be found in :
1. Primary consumer
2. Secondary consumer
3. Tertiary consumer
4. None of the above.
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