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Which of the following is responsible for turning Taj Mahal yellow?

Which of the following is responsible for turning Taj Mahal yellow?

  • (A) Chlorine
  • (B) Carbon dioxide
  • (C) Sulphur dioxide
  • (D) Ammonia
  • The correct answer is (C) Sulphur Dioxide (SO₂).
  • SO₂ is the major gas responsible for the yellowing of the Taj Mahal. This pollutant comes from the surrounding industries (the Mathura oil refinery, for example) and also from the burning of fossil fuels. SO₂ reacts with the air’s moisture and turns into sulphuric acid. This acid changes its form and becomes the acid rain. This acid rain then reacts with the white marble of the Taj Mahal, which is essentially calcium carbonate; the process is chemically called “marble cancer.”
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Related MCQs:

 ‘NATO’ is an abbreviation of:

March 18, 2026 No Comments
  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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