Silver acetylide when heated with $HCl$ gives:

What is the product formed when $4$-octyne reacts with $H_2$ in the presence of $Pd/CaCO_3$?

Identify $Z$ in the following sequence:
$C_3H_7OH$ $\xrightarrow{H_2SO_4} X$ $\xrightarrow{Br_2} Y$ $\xrightarrow{KOH} Z$

Acetylene reacts with dilute $H_2SO_4$ in the presence of $HgSO_4$ to produce .......

Which of the following has the shortest $C-C$ bond length?

The isomerisation of $1-$butyne to $2-$butyne can be achieved by treatment with