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Chemistry Medium CSS FPSC PPSC Uploaded: 14 Jul 2026

What is the general formula of alkanes where n is the number of carbon atoms?

  • A CnH2n
  • B CnH2n+2
  • C CnHn
  • D CnH2n-2
Correct Answer: Option B — CnH2n+2
Explanation:
Alkanes follow the general formula CnH2n plus 2 where each carbon forms four single bonds and the molecule is fully saturated with hydrogen atoms.
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