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Question

Which of the following isomers of the pentane gives four monochloropentane on chlorination?

A
n- pentane
B
iso-pentane
C
$$2,2-$$ Dimethylpropane
D
neo-pentane
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Solution
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Correct option is B. iso-pentane
A) On photochlorination of n-pentane, 3 monochlorinated products are obtained.
B) On photochlorination of iso-pentane, 4 monochlorinated products are obtained.
C) On photochlorination of neo-pentane, 1 monochlorinated product is obtained.
D) On photochlorination of 2,2-dimethylpropane, 1 monochlorinated product is obtained.

Hence, Option "B" is the correct answer.

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