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Which of the ...

Question

Which of the following compound(s) have restricted rotation about C-C single bond?

A

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B

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C

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D

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Solution

The correct option is C
Restricted rotation occurs in all the double bond and triple bond systems and in the cyclic systems.
In cyclic systems like cycloalkanes and heterocyclic compounds we have restricted rotation about C- C single bond.

In compound (d), restricted rotation is due to C- C double bond.

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