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JEE Main Chemistry question

ChemistryHydrocarbonsJEE Main

Consider the alkenes: CH₃–CH=CH–CH₃ (I, disubstituted), (CH₃)₂C=C(CH₃)₂ (II, tetrasubstituted), CH₃–C(CH₃)=CH₂ (III, 1,1-disubstituted), CH₃–C(CH₃)=CH–CH₃ (IV, trisubstituted). The increasing order of stability is

Answer: (A)

Solution

Alkene stability rises with the degree of substitution (more hyperconjugation/alkyl stabilization):

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Question ID VK-139372