$$ \left(\mathrm{CH}_3\right)_3 \mathrm{CH} \xrightarrow{\mathrm{KMnO}_4} X \xrightarrow[573 \mathrm{~K}]{\mathrm{Cu}} Y $$

The number of $s p^3$ and $s p^2$ carbons in $Y$ are respectively

Consider the following reaction sequence. $(A)$ and $(C)$ are

The increasing order of acidic strength of the following in aqueous solution is

The increasing order of boiling points of the following is

$$ \begin{array}{cccc} \mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3 & \mathrm{CH}_3 \mathrm{CHO} & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_3 & \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} \\ \text { I } & \text { II } & \text { III } & \text { IV } \end{array} $$