Previous year MCQs

Environment & Ecology UPPSC 2017 GS-I
Question

Which of the following are the primary causes of climate change?

(A) Excessive burning of fossil fuels
(B) Exploding numbers of automobiles driven by oil
(C) Increasing solar flares
(D) Heavy deforestation

Select the correct answer using the code given below:

Answer & Solution

Answer: (Detailed Solution Below)

Option B: A, B and D only

Detailed Solution:

The correct answer is “A, B and D only”.
The primary causes of climate change are:

1) Excessive burning of fossil fuels releases greenhouse gases like carbon dioxide and methane into the atmosphere, trapping heat and causing global warming.
2) Exploding numbers of automobiles driven by oil also contributes to greenhouse gas emissions and exacerbates climate change.
3) Trees absorb carbon dioxide from the atmosphere, and when they are cut down, this carbon is released, contributing to climate change.


Solar flares are not a significant cause of climate change. While they can affect Earth's atmosphere, their impact is relatively small compared to the effects of human activities.

Similar Questions:

Example of Lotic ecosystem is
  1. A) Swamps
  2. B) Rivers
  3. C) Ponds
  4. D) Marshy area
Which one of the following countries receive the most acid rain?
  1. A) China
  2. B) Japan
  3. C) Norway
  4. D) USA
Given below are two statements:

Assertion (A): According to the World Health Organization (WHO) in 1993, there were 16.5 million deaths due to infectious diseases worldwide.
Reason (R): Urbanisation without health planning leads to the spread of diseases.

Choose the correct answer from the codes given below:
  1. A) Both [A] and [R] are true and [R] is the correct explanation of [A]
  2. B) Both [A] and [R] are true but [R] is not the correct explanation of [A]
  3. C) [A] is true but [R] is false
  4. D) [A] is false but [R] are true
In which forest reserve of India, largest population of elephants is found:
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  2. B) Kaziranga
  3. C) Manas
  4. D) Nanda Devi
Which one of the following is not correctly matched? Nitrogen fixing agent – Crop
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  2. B) Rhizobium Leguminisarum – Pea
  3. C) Azotobacter – Wheat
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Which of the following is NOT a green house gas?
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  2. B) Chlorofluorocarbon
  3. C) Methane
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"Rashtriya Swasthya Bima Yojana" launched under Social Security Act 2008 covers:
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  3. C) only unorganized sector worker
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Which of the following has the largest brain in proportion to its body size?
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  2. B) Elephant
  3. C) Dolphin
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Match List I with List Il and select the correct answer using the code given below:
List I [Cityl - List II [River]

(A) Khartoum - (a) Zaire
(B) Brazzaville - (b) Nile
(C) Rotterdam - (c) Seine
(D) Paris - (d) Rhine
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  2. B) A-a, B-b, C-c, D-d
  3. C) A-d, B-c, C-b, D-a
  4. D) A-c, B-d, C-a, D-b
Of the following political features, which is/are common to India and the USA.

1) Residuary powers vested in the center.
2) Residuary powers vested in the states.
3) President has the power of pocket veto.
4) The upper house has some nominated members
  1. A) c only
  2. B) c and d only
  3. C) b, c and d only
  4. D) a, c and d only
Which one of the following countries joined India and USA in the Malabar naval exercise held in July 2017?
  1. A) Japan
  2. B) South Korea
  3. C) France
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Consider the following statements and select your answer from the codes given below:

A) The Governor does not have the power to appoint the judge of a State High court.
B) He is not a part of the Legislature.
C) He has the power to nominate some members in the Legislative Council.
D) He has no judicial powers.
  1. A) A and B are correct
  2. B) A and C are correct
  3. C) B and D are correct
  4. D) All are correct