Ethyl alcohol on heating with conc. $H_2SO_4$ gives

The product $(C)$ in the below mentioned reaction is:
$CH_3-CH_2-CH_2-Br$ $\xrightarrow[\Delta]{KOH_{(alc)}} A$ $\xrightarrow{HBr} B$ $\xrightarrow[KOH_{(aq)}]{\Delta} C$

The alcohol that produces turbidity immediately with $ZnCl_2 / \text{conc. } HCl$ at room temperature is:

Ethyl alcohol exhibits acidic character on reacting with

In the given pairs of alcohols,in which pair is the second alcohol more reactive than the first towards hydrogen bromide $(HBr)$?

Identify the missing reagent/condition in the following reaction:
$CH_3CH_2OH \xrightarrow{?} CH_3CH_2-O-CH_2CH_3$