${C_2}{H_5}OH\,\xrightarrow{{PB{r_2}}}X\,\xrightarrow{{KOH}}\,Y\,\xrightarrow[{(ii)\,{H_2}{O^ + }}]{{(i)\,{H_2}S{O_4}}}Z$
$C{H_3}C{H_2}OH\xrightarrow{{P + {I_2}}}A\xrightarrow[{ether}]{{Mg}}B\xrightarrow{{HCHO}}C\xrightarrow{{{H_2}O}}D$
$'X'\,\,\xrightarrow{{water}}$ અદ્રાવ્ય
$'X'\xrightarrow{{5\% \,HCl}}$ અદ્રાવ્ય
$'X'\xrightarrow{{10\% \,NaOH}}$ અદ્રાવ્ય
$'X'\xrightarrow{{10\% \,NaHC{O_3}}}$ અદ્રાવ્ય