Which of the following is not a sulphur compound present in petroleum ?

Correct answer: D. Pyrroles

  • A. Thiophenes
  • B. Mercaptans
  • C. Sulphones
  • D. Pyrroles

Explanation

Thiophenes, mercaptans and sulphones are recognised sulphur-containing petroleum compounds. Pyrroles are nitrogen-containing heterocyclic compounds, so they are the exception.

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