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Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).

Everyday & Industrial ChemistryGases in Everyday Life

What is the chemical composition of Compressed Natural Gas (CNG) compared to Sui Gas?

  1. A.CNG contains added propane
  2. B.CNG is richer in methane
  3. C.Sui Gas has more impurities
  4. D.It is the sameCorrect answer

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Quick fact: The chemical composition of Compressed Natural Gas (CNG) and Sui Gas is the same, as both are primarily methane (CH₄).

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