Question

Benzene reacts with chlorine to form benzene hexachloride in presence of
A. Nickel
B. $AlC{l_3}$
C. Bright sunlight
D. Zinc

Answer 1

Hint: Gammexane is an alternate name for benzene hexachloride. Its structure has only single bonds. Its formation from benzene is a type of addition reaction.

Complete step-by-step answer:Chlorobenzene is produced when benzene and chlorine combine with either aluminium chloride or iron.
Now, hot benzene will also experience an extra reaction with chlorine in the presence of ultraviolet radiation from the sun without the aid of a catalyst. A chlorine atom is added to each carbon atom, permanently breaking the ring delocalization. Since the approaching reactive intermediate is a chlorine free radical, \[Cl\] , the reaction proceeds via a free radical mechanism. All of the carbons in benzene will therefore have an equal share of electrons according to this mechanism. As a result, the product of this reaction is benzene hexachloride, a gamma isomer that also contains minor isomers.
When benzene and chlorine or bromine interact in the presence of a catalyst, one of the hydrogen atoms on the ring is replaced by an atom of chlorine or bromine. Room temperature is where the reactions take place. Iron or aluminium chloride serves as the catalyst when reacting benzene with bromine, or aluminium bromide otherwise.

Option ‘C’ is correct

Note: A radical substitution reaction is one in which one or more of the atoms or groups present in the substrate are replaced by new atoms or groups through the use of a free radical process. A radical chain reaction's initiation step is the point at which a free radical is created for the first time. minor isomers exist.