$\mathop {{C_2}{H_5}OH}\limits_{\left( I \right)} $ $\mathop {{C_2}{H_5}Cl}\limits_{\left( {II} \right)} $ $\mathop {{C_2}{H_5}C{H_3}}\limits_{\left( {III} \right)} $ $\mathop {{C_2}{H_5}OC{H_3}}\limits_{\left( {IV} \right)} $
\((II)\) \(C_2H_5Cl\) Dipole-Dipole \(C_2H_5Cl\) is more polar than \(C_2H_5OCH_3\) so, Dipole-Dipole \(C_2H_5Cl\) \(>\) Dipole-Dipole \(C_2H_5OCH_3\)
\((III)\) \(C_2H_5CH_3\) No hydrogen bonding and dipole- dipole interaction
\((IV)\) \(C_2H_5OCH_3\) Dipole-Dipole
Boiling points order is-
\((III) < (IV) < (II) < (I) \).
ફિનોલ $\xrightarrow{{Zn}}A\xrightarrow[{HN{O_3},{{60}\,^o}C}]{{{H_2}S{O_4}}}B\xrightarrow[{NaOH{_{(aq)}}}]{{Zn}}C$
$\left. \begin{gathered}
(A)\,\,\xrightarrow{{PB{r_3}}}\,(C)\,\xrightarrow{{Mg\,,\,ether}}Grignard\,\,reagent \hfill \\
(A)\,\,\xrightarrow[{{H_2}S{O_4}}]{{N{a_2}C{r_2}{O_7}}}\,(B) \hfill \\
\end{gathered} \right\}$ $ \to \,(D)\xrightarrow{{{H_3}{O^ \oplus }}}$ $(3,4-$ ડાયમિથાઇલ $3-$ હેકઝાનોલ l$)$