$[Figure]$ $\xrightarrow{{HBr}}$
$(I)\,\,CH_3CH_2OH + HCl \xrightarrow{{Anh.\,\,ZnC{l_2}}}$
$(II)\,\,CH_3CH_2OH + HCl \rightarrow$
$(III)\,\,(CH_3)_3COH + HCl \rightarrow$
$(IV)\,\,(CH_3)_2CHOH + HCl \xrightarrow{{Anh.\,\,ZnC{l_2}}}$
$[Figure]$ $\xrightarrow[{(ii)\,{H_2}S{O_4}\,,\,heat}]{{(i)\,OHCC{H_2}COCl}}$