UPSC NCERT ENVIRONMENT NOTES: TOPIC WISE SOLVED MCQ’s

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1. Consider the following statements:
1. Global warming is a result of a rise in the proportion of atmospheric changes at different levels.
2. About 0.5 to 7 air temperature has been increased in the 20th Century.
Which of the statements given above is/are correct?
a) 1 Only   b) 2 Only   c) 1 and 2 Both    d) Neither 1 nor 2
Ans: C

2. Which of the following are the main component gases of Green House Gases emission?
1. Carbon dioxide 2. Methane 3. Nitrogen 4. Nitrous oxide
a) 3 and 4 Only    b) 1, 2 and 4 Only  c)1, 2 and 3 Only   d) 1, 2, 3 and 4
Ans: B
3. Which of the following organization contributed International Panel on climate change (IPCC)?
1. United Nations Environment programme (UNEP)
2. World Trade Organisation (WTO)
3. World Meteorological Organisation (WMO)
a) 1, 2 and 3    b) 2 and 3 Only     c)  1 and 3 Only   d)   1 and 2 Only
Ans: C
4. Which of the following is the evidence of Global Warming?
1. Increase in air temperatures.
2. Melting of Mountain and Continental Glaciers.
3. Spreading of Tropical diseases towards temperate and polar regions.
a) Only 1 and 2     b) Only 1, 2 and 3    c) Only 3 and 4    d) 1, 2, 3 and 4
Ans: D
5. Consider the following statements:
1. The ozone layer is concentrated in the upper part of Troposphere.
2. The ozone layer is considered a protective shield and earth’s umbrella.
Which of the statements given above is/are correct?
a) 1  Only   b) 2 Only    c) 1 and 2 Both  d) Neither 1 nor 2
Ans: B
6. Consider the following statements:
1. The ozone layer prevents ultraviolet (UV) solar radiation from reaching the earth’s surface.
2. The presence of the ozone layer is of vital significance for plants, animals, and man.
Which of the statements given above is/are correct?
a) Only 2   b)  Only 1   c) Both 1 and 2   d) Neither 1 nor 2
Ans: C
7. Which of the following effects on human health are caused by ozone depletion?
1. Sunburn 2. Cataract 3. Skin cancer
a) 1, 2 and 3   b) Only 1 and 3   c) Only 2 and 3   d)  Only 1 and 2
Ans: A