MCQ
Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.

Assertion $(A)$ : Haloalkanes react with $\mathrm{KCN}$ to form alkyl cyanides as a main product while with $\mathrm{AgCN}$ form isocyanide as the main product.

Reason $(R)$ : $\mathrm{KCN}$ and $\mathrm{AgCN}$ both are highly ionic compounds.

In the light of the above statement, choose the most appropriate answer from the options given below:

  • $(A)$ is correct but $(R)$ is not correct
  • B
    Both $(A)$ and $(R)$ are correct but $(R)$ is not the correct explanation of $(\mathrm{A})$
  • C
    $(A)$ is not correct but $(R)$ is correct
  • D
    Both $(A)$ and $(R)$ are correct and $(R)$ is the correct explanation of $(A)$

Answer

Correct option: A.
$(A)$ is correct but $(R)$ is not correct
a
$\mathrm{AgCN}$ is mainly covalent in nature and nitrogen is available for attack, so alkyl isocyanide is formed as main product.

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