JEE Main Chemistry question

The most stable alkene is [BCECE 2004]

(A)RC=CRCorrect
(B)RCH=CHR
(C)CH=CH
(D)RCH=CR

Answer: (A)

Solution

Alkene stability increases with the number of alkyl substituents on the double bond because alkyl groups stabilise the -system by hyperconjugation and inductive electron donation. Stability

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Question ID VK-142159