JEE Main Chemistry question

Which of the following compounds is optically active?

(A)(CH₃)₂CHCH₂OH
(B)CH₃CH₂OH
(C)CCl₂F₂
(D)CH₃CHOHC₂H₅Correct

Answer: (D)

Solution

Butan-2-ol, CH₃–CH(OH)–C₂H₅, has its C2 bonded to four different groups (OH, H, CH₃, C₂H₅) — a genuine stereocenter. (A) has two identical methyls on its

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Question ID VK-139099