JEE Main 2015 Chemistry question

The optically inactive compound from the following is:

(1)2-chloropropanal
(2)2-chloro-2-methylbutaneCorrect
(3)2-chlorobutane
(4)2-chloropentane

Answer: (2)

Solution

A molecule is optically active if it contains a chiral centre — a carbon bearing four different groups. Check C-2 in each case. In 2-chloro-2-methylbutane, , the chlorinated carbon carries Cl, and *two identical methyl groups*; with two

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Question ID VK-115265