Which of the following does not contain an acyl group?

The products formed when diethyl ether is reacted with cold $HI$ are

In Williamson synthesis,ethoxyethane is prepared by:

In the following reaction: $Cl-CH_2-CH(O)^{14}CH_2 \xrightarrow{C_2H_5O^-} \text{the final product is:}$

Write equations of the following reactions:
$(i)$ Friedel-Crafts reaction - alkylation of anisole.
$(ii)$ Nitration of anisole.
$(iii)$ Bromination of anisole in ethanoic acid medium.
$(iv)$ Friedel-Craft's acetylation of anisole.

The major product $(P)$ in the following reaction is: