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Assertion (A): Coal-based thermal power stations contribute to acid rain.
Reason (R): Oxides of carbon are emitted when coal burns.

(a)

Both A and R are individually true and R is the correct explanation of A

(b)

Both A and R are individually true but R is not the correct explanation of A

(c)

A is true but R is false

(d)

A is false but R is true

Correct Answer

(c)

Explanation

Acid rain is caused by sulfur oxides, not carbon oxides. Hence, (c) is correct.

Microtheme: PollutionXAcid Rain —
4 questions asked in Prelims in the past.

  1. [2022] Consider the following :
    1. Carbon monoxide
    2. Nitrogen oxide
    3. Ozone
    4. Sulphur dioxide
    Excess of which of the above in the environment is/are cause(s) of acid rain ?

    • (a) 1, 2 and 3
    • (b) 2 and 4 only
    • (c) 4 only
    • (d) 1, 3 and 4
    Correct Answer: (B) 2 and 4 only
  2. [2013] Acid rain is caused by the pollution of environment by

    • (a) carbon dioxide and nitrogen
    • (b) carbon monoxide and carbon dioxide
    • (c) ozone and carbon dioxide
    • (d) nitrous oxide and sulphur dioxide
    Correct Answer: (D) nitrous oxide and sulphur dioxide
  3. [2010] Consider the following:
    1. Oxides of Hydrogen
    2. Oxides of Nitrogen
    3. Oxides of Sulphur
    Which of the above causes/cause acid rain ?

    • (a) 1 and 2 only
    • (b) 3 only
    • (c) 2 and 3 only
    • (d) 1,2 and 3
    Correct Answer: (C) 2 and 3 only
  4. [2003] Assertion (A): Coal-based thermal power stations contribute to acid rain.
    Reason (R): Oxides of carbon are emitted when coal burns.

    • (a) Both A and R are individually true and R is the correct explanation of A
    • (b) Both A and R are individually true but R is not the correct explanation of A
    • (c) A is true but R is false
    • (d) A is false but R is true
    Correct Answer: (C) A is true but R is false