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JEE Main levelSingle correct optionDifficulty 2 of 3hc175

Assertion (A): The Wurtz reaction between two different primary alkyl halides is not a good method for making an unsymmetrical alkane. Reason (R): A mixture of three alkanes is formed, which are difficult to separate.

ABoth A and R are true and R is the correct explanation of A
BBoth A and R are true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true

Answer: A

With two different halides

R - X

and

R X^{'} - X

, the products are

R - R

,

R X^{'} - R X^{'}

and

R - R X^{'}

. This mixture is hard to separate when boiling points are close, so R correctly explains A.

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