Which one of these is not compatible with arenes?

Explain: $Anthracene$ and $Phenanthrene$ are aromatic in nature.

How would you convert the following compounds into benzene?
$(i)$ Ethyne
$(ii)$ Ethene
$(iii)$ Hexane

What will be the major product in the following reaction?

The reaction is given as:
Naphthalene + Oxalyl chloride $\xrightarrow{AlCl_3} [X]$ $\xrightarrow{Na-Hg, HCl \text{ (excess)}} [Y]$
Product $Y$ is:

When benzene is chlorinated in the presence of $FeCl_3$,the electrophile is .......