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GK QUESTION#3239

What is the name of the straight-chain alkane with molecular formula C₉H₂₀?

  1. ANonaneCorrect answer
  2. BDodecane
  3. CNonadecane
  4. DIcosane
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Answer

A. Nonane

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Explanation

The straight-chain alkane with nine carbon atoms is nonane, C₉H₂₀, consistent with CₙH₂ₙ₊₂. Dodecane has twelve carbons, nonadecane nineteen, and icosane twenty. The molecular formula identifies the answer without relying on a claimed detergent application.

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