When alkyl halide is heated with dry $Ag_2O$,it produces

Identify the product$(s)$ formed in the following reaction.

Which among the following compounds is obtained as a major product $X$ in the reaction given below?
Anisole $\xrightarrow[AlCl_3 \text{ (anhydrous)}]{acetyl chloride} X$

$Ph-O-CH_2-Ph \xrightarrow{HI} A + B$ will be

The product of the reaction is $?$

Which of the following ethers cannot be synthesized by Williamson's ether synthesis?