Question

Gives 2 reaction in which benzene ring is retained and 2 reaction in which benzene ring is not retained

Answer 1

Hey dear,

Benzene is a 6-C cyclic structure with alternate double bonds.

● Reactions -

1) Benzene to cyclohexane -

Benzene can be reduced to cyclohexane with

the help of Ni/H2. C6H6 + 3H2 --> C6H12

All 3 double bonds in ring are reduced here.

2) Benzene to benzoquinone - Benzene can be oxidized to benzoquinone with

the help of acidic K2Cr207. C6H6 +3[O] --> C6H4O2 + H2O

Only 1 double bond is lost in this reaction.

Hope this helps you.