Which of the following compounds can be used as antifreeze in automobile radiators?

Amongst the following alcohols,which would react fastest with conc. $HCl$ and $ZnCl_2$?

Give the structures of the products you would expect when each of the following alcohols reacts with $(a)$ $HCl - ZnCl_{2}$,$(b)$ $HBr$,and $(c)$ $SOCl_{2}$: $(i)$ $Butan-1-ol$,$(ii)$ $2-Methylbutan-2-ol$.

Glycerol reacts with conc. $HNO_3$ and conc. $H_2SO_4$ to form

The reaction of Lucas reagent is fast with

Out of $2$-chloroethanol and ethanol,which is more acidic and why?