question_answer

Which one of the following is a free radical substitution reaction?                  [AIPMT 2003]

A)

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

C)

D)

Correct Answer: C

Solution :

[c] At higher temperature the reaction of toluene with chlorine is an example of free radical substitution.

(I) Free radical (Initiations)

(II)

(III) \[\begin{align}   & \overset{\centerdot }{\mathop{Cl}}\,+\overset{\centerdot }{\mathop{Cl}}\,\xrightarrow[{}]{{}}C{{l}_{2}}\,\,(\Pr opagation) \\  & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(temperature) \\ \end{align}\]