MHT CET 2024 Chemistry question

Which of the following alkenes does NOT exhibit Cis-trans isomerism?

(A)But-1-eneCorrect
(B)But-2-ene
(C)3,4-Dimethylhex-3-ene
(D)Pent-2-ene

Answer: (A)

Solution

Cis-trans (geometrical) isomerism in alkenes requires that each doubly bonded carbon carries two different groups. But-1-ene, \mathrm{CH_2{=}CH-CH_2CH_3}, has two H atoms on C-1, so it cannot show cis-trans isomerism, option (A). But-2-ene (H, on each

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Question ID VK-093373