Environment  Bio Diversity

91. What is the reason behind ozone hole in antarctic Region?
A. Presence of prominent polar front and stratospheric clouds.
B. Inflow of chlorofluoro carbons.
Choose the correct codes from the given below

A only B only Both A and B Neither A nor B

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92. Context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing which of the below?

Nutrients to the surface Oxygen to the surface Both A and B None of the above.

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93. What is mean by Micro-Irrigation?
A. fertilizers or nutrients loss can be reduced through Micro-irrigation.
B. Some areas of farming receding of ground water table can be checked
Choose the correct codes from the given below

A only B only Both A and B Neither A nor B

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94. Which of the following is true about carbon Sequestration or Storage in Soil?

Contour Bunding Relay cropping Zero Tillage All the above

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95. What is the difference between Antelope Oryx and Chiru?
A. Oryx are adapted to live in hot and arid areas where Chiru are adapted to live in steppes and semi-desert areas of cold high mountains
B. Oryx are adapted to live in steppes and semi-desert areas of cold high mountains where Chiru are adapted to live in hot and arid areas.
Choose the correct codes from the given below

A only B only Both A and B Neither A nor B

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96. Where the peoples are not allowed to collect and use biomass?

National Parks Bio-sphere Reserves Forest reserves All the above

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97. Which of the following countries is not a member of OPEC?

Saudi Arabia Iraq Kuwait India

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98. What is difference between LPG and CNG?
A. LPG is produced during refining of crude oil and processing of natural gas where CNG is not liquefied but only compressed less than 1%
B. CNG is produced during refining of crude oil and processing of natural gas where LPG is not liquefied but only compressed less than 1%
Choose the correct codes from the given below

A only B only Both A and B Neither A nor B

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99. Due to improper/discriminate disposal of old and used computers or their parts, which of the following are released into environment as E-waste?
A. Beryllium
B. cadmium
C. Chromium
D. Heptachlor
E. Mercury
F. Lead
G. Plutonium
Select the correct answer using codes given above.

A,C,D,F,G A,B,C,E,F B,D,E,G A,B,C,D,E,F,G

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100. acid rain is caused by the pollution of environment by

Carbon dioxide and nitrogen Carbon monoxide and carbon dioxide Ozone and carbon dioxide Nitrous oxide and sulphur dioxide

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