The following reactions is an example of .... Reaction.

${\mathrm{C}}_2{\mathrm{H}}_4\mathrm{B}{\mathrm{r}}_2\stackrel{\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{A}\mathrm{l}\mathrm{c}.\mathrm{K}\mathrm{O}\mathrm{H}\mathrm{ }\mathrm{ }\mathrm{ }\mathrm{ }}{\to }{\mathrm{C}}_2{\mathrm{H}}_2$

Which among the following depicts the correct order of acidity?

In the reaction


$\mathrm{x}$ and $\mathrm{y}$ , respectively, are

The major product of the following reaction is

For the given reaction:

What is $\mathrm{A}$?

In the following reaction sequence



X and Y are, respectively

The major product of the following reaction is

What is the final major product of the following reaction?