Ethylidene dichloride is obtained by the reaction of excess of $HCl$ with

Which of the following reagents is used to distinguish propene and propyne?

The reaction of $1,2-$dibromoethane with alcoholic $KOH$ yields product $X$. What is the hybridization of the carbon atoms in $X$?

Which of the following is suitable for the preparation of alkene from alkyne?

Number of possible alkynes with formula $C_{5}H_{8}$ is

How can propyne and propene be distinguished?