Ethanol when reacts with $PCl_5$ gives $A$,$POCl_3$ and $HCl$. $A$ reacts with dry $Ag_2O$ to form $B$ (major product) and $AgCl$. $A$ and $B$ respectively are

Which one of the following,with $HBr$ will give a phenol?

What are $A$ and $B$ respectively in the following reaction?
$(CH_3)_3C-OCH_3 + HI \rightarrow A + B$

Give the common and $\rm {IUPAC}$ names for the following ether compounds:
$(i) \ CH_3OCH_3$
$(ii) \ C_2H_5OC_2H_5$
$(iii) \ C_6H_5OC_6H_5$
$(iv) \ CH_3OCH_2CH_2CH_3$
$(v) \ CH_3OCH(CH_3)_2$
$(vi) \ C_6H_5OCH_3$
$(vii) \ C_6H_5OCH_2CH_3$
$(viii) \ C_6H_5O(CH_2)_6CH_3$
$(ix) \ C_6H_5OCH_2CH_2CH(CH_3)_2$
$(x) \ CH_3OCH_2CH_2OCH_3$
$(xi) \ C_2H_5OCH_2CH_2OC_2H_5$
$(xii) \ CH_3OCH_2CH_2CH_2OCH_3$
$(xiii) \ CH_3OCH_2CH_2OC_2H_5$
$(xiv) \ \text{Cyclohexyl methyl ether}$

The compound formed when ethyl bromide is heated with dry silver oxide is

Consider the following reaction. Identify products $A$ and $B$ :-