Environmental Problems UPSC Questions

General Issues on Environmental Ecology, Bio-diversity & Climate Change

Environmental Problems MCQ Questions


1.
Which of the following states is partially covered under the Indian Himalayan Region (IHR)?
A.
Uttarakhand
B.
West Bengal
C.
Sikkim
D.
Nagaland
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ANSWER :
B. West Bengal
2.
The formation of ozone hole in the antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
UPSC - 2011
A.
Presence of prominent tropo- spheric turbulence;and inflow of chlorofluorocarbons.
B.
Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons.
C.
Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons.
D.
Increased temperature at polar region due to global warming.
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ANSWER :
B. Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons.
3.
Consider the following statements: Chlorofluorocarbons, known as ozone-depleting substances, are used.
1. In the production of plastic foams
2. in the production of tubeless tyres
3. in cleaning certain electronic components
4. as pressurizing agents in aerosol cans
Which of the statements given above is/are correct?
UPSC - 2012
A.
1, 2 and 3 only
B.
4 only
C.
1, 3 and 4 only
D.
1, 2, 3 and 4
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ANSWER :
C. 1, 3 and 4 only
4.
What is a major role of the IHR with respect to carbon?
A.
Carbon emitter
B.
Carbon neutral
C.
Carbon sink
D.
Carbon reducer
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ANSWER :
C. Carbon sink
5.
Recently, there has been a concern over the short supply of a group of elements called 'rare earth metals' why?
1. China, which is the largest producer of these elements, has imposed some restrictions on their export.
2. Other than China, Australia, Canada and Chile, these elements are not found in any country.
3. Rare earth metals are essential for the manufacture of various kinds of Electronic items and there is a growing demand for these elements.
Which of the statements given above is/are correct?
UPSC - 2012
A.
1 only
B.
2 and 3 only
C.
1 and 3 only
D.
1, 2 and 3
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ANSWER :
C. 1 and 3 only
6.
Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal cooking process. Aflatoxins are produced by
UPSC - 2013
A.
bacteria
B.
protozoa
C.
moulds
D.
viruses
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ANSWER :
C. moulds