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Earn 100

The major ozone depleting substance out of the following is

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Important Questions on Environmental Issues

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Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?
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Biology>Ecology>Environmental Issues>Ozone Depletion
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?
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Biology>Ecology>Environmental Issues>Ozone Depletion
The unit which is used to measure the ozone is:
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Biology>Ecology>Environmental Issues>Ozone Depletion
An increase in the concentration of the toxicant at successive trophic levels is known as:
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Biology>Ecology>Environmental Issues>Ozone Depletion
Montreal protocol was signed in 1987 for control of
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Biology>Ecology>Environmental Issues>Ozone Depletion
In the stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
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Biology>Ecology>Environmental Issues>Ozone Depletion
Dobson units are used to measure thickness of:
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Biology>Ecology>Environmental Issues>Ozone Depletion
Among the gases a-e, the gases that cause greenhouse effect are:
aCO2
bH2O
cCFCs
dO2
eO3
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Biology>Ecology>Environmental Issues>Ozone Depletion
Which one of the following is a wrong statement?
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Biology>Ecology>Environmental Issues>Ozone Depletion
Snow blindness is caused due to
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Biology>Ecology>Environmental Issues>Ozone Depletion
The highest DDT concentration in aquatic food chain shall occur in
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Biology>Ecology>Environmental Issues>Ozone Depletion
The zone of atmosphere in which the ozone layer is:
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Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following in sewage treatment removes suspended solids?
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Biology>Ecology>Environmental Issues>Ozone Depletion
World Ozone Day is celebrated on
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Biology>Ecology>Environmental Issues>Ozone Depletion
Among the following, the one that is not a greenhouse gas is:
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Biology>Ecology>Environmental Issues>Ozone Depletion
The maximum concentration of harmful chemicals is expected to be found in organisms
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Biology>Ecology>Environmental Issues>Ozone Depletion
Which one of the following human activities has contributed as deforestation by northeastern sides of India?
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Biology>Ecology>Environmental Issues>Ozone Depletion

Match the entries in columns I and II and choose the correct pairs from the choices below.

  Column I   Column II
A High BOD 1 Skin cancer
B Ozone hole 2 Greenhouse gas
C El Nino effect 3 Food chain
D Biomagnification 4 Water pollution
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Biology>Ecology>Environmental Issues>Ozone Depletion
Snow-blindness in Antarctic region is due to
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Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?