MCQ QUESTIONS FOR UPSC PRELIMS 2021
 |
| mcq for upsc prelims |
MCQ FOR UPSC PRELIMS 2021
1. Which is the most stable ecosystem ?
A. Fresh
water
B.
Grassland
C.
Cropland
D. Ocean
2. Which
one of the following is the correct order of phases of biotic succession?
A.
Stabilization - Migration - Ecesis - Reaction - Nudation
B.
Nudation - Migration - Ecesis - Reaction - Stabilization
C.
Nudation - Reaction - Ecesis - Migration - Stabilization
D.
Nudation - Migration - Reaction - Ecesis – Stabilization
3. Which
one of the following is the correct order of phases of Food chain ?
A.
Herrings - Crustaceans - Diatoms
B.
Crustaceans - Diatoms - Herrings
C.
Herrings - Crustaceans - Diatoms
D.
Diatoms - Crustaceans - Herrings
4. Which
of the following groups of gases contributes to the greenhouse effect ?
A.
Hydrogen Gas, Methane, Chlorine, Chlorofluorocarbons, Sulphur hexafluoride
B.
Carbon dioxide, Oxygen, Nitrous oxide, Chlorofluorocarbons, Sulphur
hexafluoride
C.
Carbon dioxide, Methane, Nitrous oxide, Chlorofluorocarbons, Sulphur
hexafluoride
D.
Carbon dioxide, Hydrogen Gas, Nitrous oxide, Chlorofluorocarbons, Oxygen
5. Which
of the following is a biosphere reserve based in India, selected under UNESCO
MAB?
1. Gulf
of Mannar biosphere reserve
2.
Sundarban biosphere reserve
3.
Nokrek biosphere reserve
4.
Similipal biosphere reserve
5.
Agasthyamalai biosphere reserve
Select
the correct answer in the given sentence.
A. 1,2 AND 3
B. 2 AND 3
C. 3,4 AND 5
D. 1,2,3,4 AND 5
6. Consider
the following statements according to Agasthyamalai Biosphere Reserve.
1.
Agasthyamalai Biosphere Reserve comes under the Western Ghats.
2.
Agasthyamalai Biosphere Reserve is spread over two states of India, Kerala and
Tamil Nadu.
3. Became
part of World Network by UNESCO Biosphere Reserves in 2016.
4.
Kalakkad Mundanthurai Tiger Reserve, Neyyar Wildlife Sanctuary and Shendurney
Wildlife Sanctuary.
which of
the statement given above the correct ?
A. 1 AND
3
B. 2,3
AND 4
C. 1 AND
4
D.
1,2,3, AND 4
ANSWER
1 D. Ocean
2 B
3 D. Diatoms - Crustaceans - Herrings
4 C. Carbon dioxide, Methane, Nitrous oxide,
Chlorofluorocarbons, Sulphur hexafluoride
5 D. 1,2,3,4 AND 5
6 D. 1,2,3, AND 4
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