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Which alkyne gives an aldehyde, rather than a ketone, on hydration with dilute H2SO4 and HgSO4?
AEthyne
BPropyne
CBut-1-yne
DBut-2-yne
Answer & Solution
Correct answer: A. Ethyne
Only ethyne can end up with a CH3-CH=O arrangement after enol tautomerism, since every other alkyne gives a ketone.
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