- AGlycol and formaldehyde
- BGlycol and phenol
- CGlycol and phthalic acid
- ✓Glycol and terephthalic acid

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$Pt _{( s )}\left| H _2( g , 1\,atm )\right| H ^{+}( aq , 1 M )|| Fe ^{3+}( aq ), Fe ^{2+}( aq ) \mid Pt ( s )$
When the potential of the cell is $0.712\,V$ at $298\,K$, the ratio $\left[ Fe ^{2+}\right] /\left[ Fe ^{3+}\right]$ is $.......$(Nearest integer)
Given: $Fe ^{3+}+ e ^{-}= Fe ^{2+}, E ^{\circ} Fe ^{3+}, Fe ^{2+} \mid Pt =0.771$
$\frac{2.303 RT }{ F }=0.06\,V$
$CHC{l_3}\xrightarrow{{Air/hv}}x\xrightarrow[{Excess}]{{{C_6}{H_6}\,/\,Anhy\,AlC{l_3}}}y$ , $y$ will be
$\left( {{C_2}O_4^{2 - } = } \right.$ Oxalato $)$
(Molal depression constant for water is $1.80\, K\, kg\,mol ^{-1}$ and molar mass of $KCl$ is $74.6 \,g\, mol ^{-1}$ )