Identify the compound $\mathrm{X}$ having molecular formula ${\mathrm{C}}_4{\mathrm{H}}_8$ gives $\mathrm{Y}\left({\mathrm{C}}_4{\mathrm{H}}_{10}\mathrm{O}\right)$ when reacted with $\frac{{\mathrm{H}}_2\mathrm{O}}{{\mathrm{H}}_2{\mathrm{SO}}_4}, \mathrm{Y}$ can not be resolved in optical isomer.

The major product in the following conversion is

The major product of the following reaction is:

What is the major product expected from the following reaction?



Where D is an isotope of hydrogen.

In the given reaction, the product $\mathrm{P}$ is

In the following reaction sequence

X and Y are

In the reaction

The major product of the following reaction is: