question_answer

                  An organic compound \[A({{C}_{4}}{{H}_{9}}Cl)\] on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative then, A is:                                                              

A)                 t-butyl chloride

B)                 sec- butyl chloride

C)                 iso butyl chloride

D)                 n-butyl chloride

Correct Answer: A

Solution :

                Alkyl halides reacts with Na in presence of dry ether to form alkanes is known as Wurtz reaction                 In the given question \[{{C}_{4}}{{H}_{9}}Cl\] is the t-butyl chloride (-4). It reacts with Na in dry ether to form a hydrocarbon that on chlorination gives only one monochloro derivative.                                 (It gives only one type of mono chloro derivative)