question_answer

                Which one of the following is a free radical substitution reaction?                                          

A)                                        

B)                 \[C{{H}_{3}}CHO+HCN\xrightarrow[{}]{{}}C{{H}_{3}}CH(OH)CN\]

C)                                

D)                

Correct Answer: C

Solution :

                At higher temperature the reaction of toluene with chlorine is an example of free radical substitution.                 (I) Free radical (Initiations)                 (II) (a)                                                   (b)                                                 (III) \[\begin{align}   & \overset{\centerdot }{\mathop{Cl}}\,+\overset{\centerdot }{\mathop{Cl}}\,\xrightarrow[{}]{{}}C{{l}_{2}}\,\,(\Pr opagation) \\  & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(temperature) \\ \end{align}\]