Question

What is additionand substitution reaction

Answer 1

"substituion reaction is a chemical reaction during which one functional group in a chemical component is replaced by another functional group.
substitution reactions are of prime importance in organic chemistry.

Answer 2

Substitution reaction (also known as single displacement reaction or single substitution reaction) is a chemical reaction during which one functional group in a chemical compound is replaced by another functional group. Substitution reactions are of prime importance in organic chemistry.