Assertion :Free redical bromination of alkane, in general, gives a bromo alkane with greater purity than purity of chloroalkane obtained in free redical chlorination reaction. Reason: Bromination of alkane is highly selective compared to chlorination reaction.

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 wrong but reason is correct.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Bromine is much less reactive but more selective than chlorine in radical halogenation.

It is because the bromine atom has a significant $E_{a c t}$ in the first step of propagation. The greater the difference between activation energies, the larger the selectivity. So the reaction is much more controllable and selective.

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