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Question

Which alcohol yields pent-2-ene as the major product on dehydration with conc. H₂SO₄ at 160°C?

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Explanation

Pentan-2-ol (CH₃CH(OH)CH₂CH₂CH₃) dehydrates to pent-2-ene (CH₃CH=CHCH₂CH₃) as the major product, following Saytzeff’s rule.

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