Methoxyethane on reaction with hot concentrated $HI$ gives

One mole of an organic compound $(A)$ with the formula $C_3H_8O$ reacts completely with two moles of $HI$ to form $X$ and $Y$. When $Y$ is boiled with aqueous alkali it forms $Z$. $Z$ answers the iodoform test. The compound $(A)$ is

Methylphenyl ether can be obtained by reacting

Which of the following will be obtained by keeping ether in contact with air for a long time?

According to the Lewis concept of acids and bases,ether is:

The hybridisation of oxygen in diethyl ether is