Question:
What is ' $X^{\prime}$ in the given reaction ?
Correct Option: 1
Solution:
$\begin{aligned}&\mathrm{CH}_{2}-\mathrm{OH} \\&\mathrm{CH}_{2}-\mathrm{OH}\end{aligned}+$ oxalic acid $\stackrel{210^{\circ} \mathrm{C}}{\rightarrow} \mathrm{CH}_{2}=\mathrm{CH}_{2}$