Exercise : Environmental Studies MCQ Questions and Answers
Question 1
The earth's land surface covered by forest is about
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| B. |
| C. |
| D. |
Correct Answer : C. 30 %
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Question 2
Which of the following is major environmental issues in mining activities?
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| B. |
| C. |
| D. |
Correct Answer : B. All of these
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Question 3
Each chlorine free radical can destroy the number of ozone molecules
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. 100,000 ozone molecules
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Question 4
Renewable energy is
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| B. |
| C. |
| D. |
Correct Answer : C. Primary source
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Question 5
The major green house gas which is responsible for causing about 60% of the green house effect on earth among the following is
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. Carbon dioxide
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Question 6
Karnataka State Pollution Control Board was established in the year
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| B. |
| C. |
| D. |
Correct Answer : D. 1974
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Question 7
Loss of water content through the plants into the atmosphere is called :
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| B. |
| C. |
| D. |
Correct Answer : D. Transpiration
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Question 8
Ozone hole is said to occur when the ozone level decreases below
| A. |
| B. |
| C. |
| D. |
Correct Answer : C. 200 DU
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Question 9
The radiations absorbed by ozone layer are
| A. |
| B. |
| C. |
| D. |
Correct Answer : D. Ultra-violet
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Question 10
The equivalent of one Dobson unit is
| A. |
| B. |
| C. |
| D. |
Correct Answer : A. 0.01 mm
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