Give $IUPAC$ names of the following ethers:
$(i)$ $C_2H_5OCH_2CH(CH_3)_2$
$(ii)$ $CH_3OCH_2CH_2Cl$
$(iii)$ $O_2NC_6H_4OCH_3(p)$
$(iv)$ $CH_3CH_2CH_2OCH_3$
$(v)$ $1$-Ethoxy-$4,4$-dimethylcyclohexane
$(vi)$ Ethoxybenzene

What is $X$ in the following reaction?
$C_2H_5OC_2H_5 + 4[H] \xrightarrow{Red \ P + HI} 2X + H_2O$

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R).$
Assertion $(A):$ Synthesis of ethyl phenyl ether may be achieved by Williamson synthesis.
Reason $(R):$ Reaction of bromobenzene with sodium ethoxide yields ethyl phenyl ether.
In the light of the above statements,choose the most appropriate answer from the options given below:

What is obtained when sodium ethoxide and ethyl iodide are heated together?

In ethers,the $C-O-C$ bond angle is ........ $^{\circ}$

In which of the following reactions is an ether $NOT$ a main product?