Assertion : ${C N}^{-}$ can be oxidised to $({C N)}_{2}$ . Reason: ${C N}^{-}$ is pseudohalide.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
The cyanide ion, ${C N}^{-}$ is a psuedohalide.
It resembles halide ions.
It can be oxidized to cyanogen, $({C N)}_{2}$ which is psuedo halogen.
Thus, Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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