Page 1 - Assignment-Environmental Issues

Assignment

A – Multiple Choice Questions (MCQs)

1. Montreal protocol aims at
(a) reduction of ozone depleting substances
(b) biodiversity conservation
(c) control of water pollution
(d) control of CO emission
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2. Biochemical Oxygen Demand (BOD) in a river water
(a) remains unchanged when algal bloom occurs
(b) has no relationship with concentration of oxygen in the water
(c) gives a measure of Salmonella in the water
(d) increases when sewage gets mixed with river water
3. According to Central Pollution Control Board (CPCB), which particulate size in
diameter (in micrometres) of the air pollutants is responsible for greatest harm
to human health?
(a) 2.5 or less
(b) 1.5 or less
(c) 1.0 or less
(d) 5.2 or 2.5
4. Which one of the following is being tried in India as a biofuel substitute for fossil
fuels?
(a) Jatropha
(b) Azadirachta
(c) Musa
(d) Aegilops
5. Which one of the following is the correct percentage of the two (out of the total
of 4) green-house gases that contribute to the total global warming?
(a) CFCs 14%, CH 20%
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(b) CO 40%, CFCs 30%
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(c) N O 6%, CO 86%
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(d) CH 20%, N O 18%
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6. Burying the radioactive wastes is not acceptable to many people as:
1. there is a risk of groundwater contamination
2. it may explode
3. it will harm the buried dead bodies
4. it may get accumulated in vegetations
7. Natural ageing of a lake by biological enrichment of its water is known as:
1. Eutrophication
2. Biomagnification
3. Bioremediation
4. Biofortification