Q. No.Rachel Carson's famous book "Silent Spring" is related to :
1. Noise pollution
2. Population explosion
3. Ecosystem management
4. Pesticide pollution
1. Noise pollution
2. Population explosion
3. Ecosystem management
4. Pesticide pollution
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers:
1. Methane
2. Nitrous oxide
3. Ozone
4. Ammonia
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Joint Forest Management Concept was introduced in India during:
1. 1990s
2. 1960s
3. 1970s
4. 1980s
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Biochemical Oxygen Demand (BOD) may not be good index for pollution for water bodies receiving effluents from
1. sugar industry
2. domestic sewage
3. dairy industry
4. petroleum industry
The highest DDT concentration in aquatic food chain shall occur in
1. Eel
2. phytoplankton
3. seagull
4. crab
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Which one of the following statements in not valid for aerosols
1. They are harmful to human health
2. They alter rainfall and monsoon patterns
3. They cause increased agricultural productivity
4. They have negative impact on agricultural land
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and releaseof molecular oxygen?
1. Carbon
2. Oxygen
3. Fe
4. CI
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Drinking mineral water with low levels ( ~ 0.02 ppm) of pesticide for long period would
1. Cause cancer of intestine
2. Pesticide accumulation in the body
3. Cause leukaemia
4. Produce immunity against mosquito
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