HARD
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Why does ozone hole form over Antarctica?

Important Questions on Environmental Issues

EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which one of the following human activities has contributed as deforestation by northeastern sides of India?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Among the gases a-e, the gases that cause greenhouse effect are:
aCO2
bH2O
cCFCs
dO2
eO3
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Montreal protocol was signed in 1987 for control of
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following in sewage treatment removes suspended solids?
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following harmful radiation is absorbed by ozone layer of the stratosphere?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Snow-blindness in Antarctic region is due to
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
World Ozone Day is celebrated on
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Among the following, the one that is not a greenhouse gas is:
HARD
Biology>Ecology>Environmental Issues>Ozone Depletion
Define Greenhouse gases. Give any two examples. 
EASY
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?
MEDIUM
Biology>Ecology>Environmental Issues>Ozone Depletion
Define ‘deforestation’. Comment on its effects. 
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The maximum concentration of harmful chemicals is expected to be found in organisms
EASY
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?
EASY
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
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
Which one of the following is a wrong statement?
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The zone of atmosphere in which the ozone layer is:
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
The highest DDT concentration in aquatic food chain shall occur in
EASY
Biology>Ecology>Environmental Issues>Ozone Depletion
An increase in the concentration of the toxicant at successive trophic levels is known as: