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Prelims 2021 · Q18 · Air & water pollution

With reference to furnace oil, consider the following statements :

  1. 1.It is a product of oil refineries.
  2. 2.Some industries use it to generate power.
  3. 3.Its use causes sulphur emissions into environment.

Which of the statements given above are correct?

Show answer

Answer: D. Statement 1 is correct: furnace oil is a heavy residue from refining crude oil. Statement 2 is correct: industries burn it in boilers and generators to make power. Statement 3 is correct: it has high sulphur, so burning it releases sulphur dioxide. So all three.

Watch for: Statement 2 seems unusual, but many industries use furnace oil for captive power.

Why the other options are wrong
  • A. Wrong because statement 3 is also correct.
  • B. Wrong because statement 1 is also correct.
  • C. Wrong because statement 2 is also correct.

Source to check: Supreme Court order banning furnace oil and pet coke in NCR (2017); CPCB notifications on furnace oil

Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.