Identify the product of the following reaction:

What is $Y$ in the following reaction?
$C_2H_5I + NaOC_2H_5 \longrightarrow X + NaI$
$X + 2HI \xrightarrow{\Delta} 2Y + H_2O$

Given below are two statements $:$
Statement $I :$ Dimethyl ether is completely soluble in water. However,diethyl ether is soluble in water to a very small extent.
Statement $II :$ Sodium metal can be used to dry diethyl ether and not ethyl alcohol. In the light of given statements,choose the correct answer from the options given below

Consider the following reaction: $CH_3-C(CH_3)_2-O-CH_3 \xrightarrow{HI (1 \text{ mole})} \text{Products}$. The main products of the reaction will be:

Which of the following substances resists the nucleophilic attack of $OH^{-}$ ions?

Write the mechanism of the reaction of $HI$ with methoxybenzene.