Statement-I: Addition of HBr to 1-butene gives two optical isomers.
Because
Statement-II: The product contains one asymmetric carbon.

Statement-I is True, Statement-II is True ; Statement-II is a correct explanation for Statement-I

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Statement-I is True, Statement-II is True ; Statement-II is NOT a correct explanation for Statement-I

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Statement-I is True, Statement-II is False

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Statement-I is False, Statement-II is True

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Solution

The correct option is A Statement-I is True, Statement-II is True ; Statement-II is a correct explanation for Statement-I
Addition of HBr to 1-butene gives two optical isomers as the product contains one asymmetric carbon.
$C H_{3} - C H_{2} - C = C H + H B r \to C H_{3} - C H_{2} - C^{*} H B r \equiv C H_{3}$
Thus statement-I is True, Statement-II is True ; Statement-II is a correct explanation for Statement-I.

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