The reaction of $1,2$-dibromoethane with alcoholic potash yields.......

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

In the acetylene molecule,the two carbon atoms are linked by:

An organic compound $X$ with molecular formula $C_6H_{10}$,when treated with $HBr$,forms a $gem$-dibromide. The compound $X$ upon warming with $HgSO_4$ and dil. $H_2SO_4$,produces a ketone,which gives a positive iodoform test. The compound $X$ is

The final product of the following reaction is .......
$CaO + 3C$ $\xrightarrow{\text{Heat}} A$ $\xrightarrow{H_2O} B$ $\xrightarrow{H_2SO_4, Hg^{2+}} C$

$CaC_2 + H_2O \to A \xrightarrow{H_2SO_4/HgSO_4} B$. Identify $A$ and $B$ in the given reaction.