Assertion :In comparison to ethyl chloride it is difficult to carry out nucleophilic substitution on vinyl chloride. Reason: Vinyl group is electron donating.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
$C H_{2} = C H - C l$ has some partial double bond character between carbon and chlorine atom. So, nucleophilic substitution is difficult to carry as it is difficult to break the partial double bond in vinyl chloride than ethyl chloride $C H_{3} C H_{2} - C l$ where there is no double bond character.

Vinyl group is not electron donating.

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