The compound belonging to the homologous series of ethyne is .........

The number of $\sigma$ and $\pi$ bonds present in $pent-4-en-1-yne$ is

Which of the following compounds does not release $CO_2$ on oxidative ozonolysis?

What is obtained when $N_2$ reacts with calcium carbide?

Compound $(X)$ [styrene] is subjected to the following sequence of reactions: $(i)$ $Br_2/CHCl_3$,$(ii)$ $NaNH_2$ (excess),$(iii)$ $CH_3I$,$(iv)$ $H_2, Na/NH_3(l)$,giving Major Product $(Y)$. The molar mass of the major product $(Y)$ formed is . . . . . . $\text{g mol}^{-1}$. (Given molar mass in $\text{g mol}^{-1}$: $C:12, H:1$)

In the reaction $CH_3-C \equiv C-CH_3 \xrightarrow[(ii) H_2O/Zn]{(i) X} CH_3-CO-CO-CH_3$,what is $X$?