The major product of the following reaction is

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:

The hybridisation of oxygen in diethyl ether is

Ethyl chloride reacts with sodium ethoxide to form a compound $A$. Which of the following reactions also yields $A$?

$(CH_3)_3C-CH(O)CH_2 + CH_3SNa \xrightarrow{C_2H_5OH} ?$
The product formed is:

$A$ solution of $Ph_3CCO_2H$ in concentrated $H_2SO_4$ gives $(X)$ when poured into methanol. $X$ is