1) Which of the following compounds cannot be prepared singly by the Wurtz reaction? A) $C_{2}H_{6}$ B) $(CH_{3})_{2}CHCH_{3}$ C) $CH_{3}CH_{2}CH_{2}CH_{3}$ D) All of the above can be prepared Answer: Option BExplanation:If two different alkyl halides $(R_{1}-X$ and $R_{2}-X)$ are used , a mixture of three alkanes is obtained which is difficult to separate
