Properties of Glycol

find out the value of 'X'.

With anhydrous zinc chloride, ethylene glycol gives

By distilling glycol with fuming sulphuric acid, which of following is obtained

The reaction of ethylene glycol with $P{I}_3$ gives

Ethylene glycol, on oxidation with per-iodic acid, gives-

The product obtained when


is oxidized with $\mathrm{H}\mathrm{I}{\mathrm{O}}_4$

Ethylene glycol gives oxalic acid on multiple reactions of oxidation with-