Assertion :The addition of $B r_{2}$ to 1-butene gives two optical isomers. Reason: The product contains one asymmetric carbon.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The addition of $B r_{2}$ to 1-butene gives two optical isomers. The product contains one asymmetric carbon.
Number of optical isomers = $2^{n} = 2^{1} = 2$
Hence, both statement (I) and statement (II) correct and statement (II) is the correct explanation of statement (I).

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Assertion :The addition of Br2 to 1-butene gives two optical isomers. Reason: The product contains one asymmetric carbon.

Assertion :The addition of $B r_{2}$ to 1-butene gives two optical isomers. Reason: The product contains one asymmetric carbon.