Hydrocarbons Question 314

Question: Which of the following is a gemdihalide [CPMT 1976, 88]

Options:

A) $ CH_3.CHBr.CHBr.CH_3 $

B) $ CH_2Br.CH_2Br $

C) $ CHBr=CHBr $

D) $ CH_3CHBr_2 $

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Answer:

Correct Answer: D

Solution:

In gemdihalide both the halogen atoms are present on the same carbon atom while in vicdihalide both the halogen atoms are present on adjacent carbon atoms.

$ \underset{Gemdihalide}{\mathop{CH_3-CHBr_2}} $

$ \underset{vic\text{-}dihalide}{\mathop{\underset{\underset{Br}{\mathop{|}}}{\mathop{CH_2}}-\underset{\underset{Br}{\mathop{|}}}{\mathop{CH_2}}}} $