On heating diethyl ether with conc. $HI$,$2$ moles of which of the following is formed?

In the given reaction,the product is:
$C_6H_5OH + C_2H_5I \xrightarrow{C_2H_5O^- / C_2H_5OH} \text{Product}$

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

An ether $(A)$,$C_5H_{12}O$,when heated with excess of hot concentrated $HI$ produced two alkyl halides which when treated with $NaOH$ yielded compounds $(B)$ and $(C)$. Oxidation of $(B)$ and $(C)$ gave a propanone and an ethanoic acid respectively. The $IUPAC$ name of the ether $(A)$ is

In the reaction $Ar-OH + RX \xrightarrow{\text{alkali}} A$,$A$ is

The reaction given below is known as:
$C_2H_5ONa + IC_2H_5 \xrightarrow{} C_2H_5OC_2H_5 + NaI$