Categorise these reactions as substitution, addition, elimination or rearrangement reaction giving reason

cbse
organicchemistry

#1

Categorise these reactions as substitution, addition, elimination or rearrangement reaction giving reason.


#2

(i) First reaction is an example of substitution reaction as ${{Cl}^{-}}$ group is replaced by O${{H}^{-}}$ group.
(ii) This reaction is an example of addition reaction as two molecules form a single product.