Question

Explain please
this question with reasons​

Answer 1

Answer:

in option B sulphonation

it is revesible

Answer 2

Answer:

1- Nitration is a general class of a chemical process for the introduction of a nitro group into an organic chemical compound. More loosely the term also is applied incorrectly to the different process of forming nitrate esters between alcohols and nitric acid, as occurs in the synthesis of nitroglycerin.

2- Aromatic sulfonation is an organic reaction in which a hydrogen atom on an arene is replaced by a sulfonic acid functional group in an electrophilic aromatic substitution.

3- Halogenation is the replacement of a hydrogen atom by a halogen atom in a molecule. Halogens is the group name that is given to fluorine, chlorine, bromine and iodine.

4- Alkylation is the transfer of an alkyl group from one molecule to another. The alkyl group may be transferred as an alkyl carbocation, a free radical, a carbanion or a carbene (or their equivalents).