Chloroform,on warming with $Ag$ powder,gives:

When acetylene is passed through dilute sulfuric acid containing mercuric sulfate,determine the number of $\pi$-bonds in the product formed.

The major product in the following reaction is

$2,3$-dibromobutane can be converted to $2$-butyne in a two-step reaction using:

Which of the following reactions yields $2,2$-dibromopropane?

What is the major product of the following reaction?
$Cyclohexyl-C \equiv CH \xrightarrow{HOCl \text{ (excess)}} \text{major product}$