$\mathop C\limits_{\mathop |\limits_{COOH} } {H_2}\, - \,\,\mathop {\mathop C\limits^{\mathop |\limits^{OH} } }\limits_{\mathop |\limits_{COOH} } \,\, - \,\,C{H_2}\,\, - \,\,\mathop C\limits_{\mathop {||}\limits_O } \,\, - \,\,OH$
$(i)$ $ CH_3CH = CHCH_3$ અને
$(ii)$ $\begin{array}{*{20}{c}}
{C{H_3} - CH - OH} \\
{|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,C{H_2}C{H_3}}
\end{array}$
પદાર્થો કઈ સમઘટક્તા દર્શાવે છે ?