Write chemical reaction for the preparation of phenol from chlorobenzene.
Chlorobenzene is fused with NaOH(at 623K and 320 atm pressure)to produce sodium phenoxide, which gives phenol on acidification.

Arrange the following compounds in increasing order of their boiling points:

The reaction 
suggests that phenol is :
In the reaction R–OH + HCl $\xrightarrow{\text{ZnCl}_2}$ RCl + H$_2$O, what is the correct order of reactivity of alcohols?