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XII MDCAT Chemistry Test #Nomenclature of Organic Compounds #Organic Nomenclature

1

Choose the best answer

What is the correct IUPAC name of HC≡C–CO–CH₃?

Verified Answer & Explanation⌄

Correct Answer: D) But-3-yn-2-one

Concept Explanation

The ketone is the principal functional group and must get the lowest locant. Numbering from the CH₃ end gives but-3-yn-2-one.

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