Assertion : Cyanide (CN^-) is a strong nucleophile. Reason : Benz… - Vidyadip

MCQ

Assertion : Cyanide $(CN^-)$ is a strong nucleophile.
Reason : Benzonitrile is prepared by the reaction of chlorobenzene with potassium cyanide.

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
✓
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: C.

If the Assertion is correct but Reason is incorrect.

c
Aryl halides (chlorobenzene) do not undergo nucleophilic substitution with $KCN$ because of the low reactivity of the $Cl$ atom, which is because of resonance in chlorobenzene. So assertion is true. Reason is false.

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