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KCET2026ChemistryGeneral Organic Chemistry

The compound with molecular formula C ₂₀ H ₄₂ is

Options

  1. ADecane
  2. BDodecane
  3. CEicosane
  4. DHicosane

Correct answer

C. Eicosane

Step-by-step solution

The given molecular formula is C ₂₀ H ₄₂ . This matches the general formula for alkanes, C _n H _ 2n+2 , where n = 20 . The IUPAC root word for a 20-carbon chain is 'eicos'. Therefore, the alkane with 20 carbon atoms is named eicosane. Answer: Eicosane

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