Kolbe's electrolysis of sodium acetate at the anode gives:

The smallest compound,which on photochlorination produces diastereomers is

What are $X$ and $Y$ in the following reaction sequence?
Iso-pentane $\xrightarrow{KMnO_4} X$ $\xrightarrow[358 \ K]{20 \% H_3PO_4} Y$

In the given compounds,which has the highest boiling point $:-$

In the reaction of $1$-bromo-$3$-chlorocyclobutane with two equivalents of sodium in ether,the major product is

The tetraethyl lead mixed in petrol works as