MHT CET 2025 Chemistry question

Which of the following compounds is an optically inactive compound?

(A)3-chlorohexane
(B)2-chloro-2-methylbutaneCorrect
(C)2-chloropentane
(D)2-chloro-3-methylbutane

Answer: (B)

Solution

A compound is optically active only if it has a chiral (asymmetric) carbon with four different groups. (A) 3-chlorohexane: C-3 carries H, Cl, ethyl and propyl, so it is chiral. (B) 2-chloro-2-methylbutane, (CH_3)_2CCl-CH_2CH_3: C-2 carries Cl, two identical

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Question ID VK-102659