$A$ petroleum fraction having a boiling range of $70-200 \ ^\circ C$ and containing $6-10$ carbon atoms per molecule is called:

Which of the following reactions is an elimination reaction?

The following reaction takes place in high yields. Use your knowledge of alkene chemistry to predict the product.

What is the acid $(A)$ obtained in the following reaction sequence?
${C_2H_5I}$ $\xrightarrow{\text{alc. KOH}} X$ $\xrightarrow[CCl_4]{Br_2} Y$ $\xrightarrow{KCN} Z$ $\xrightarrow{H_3O^+} A$

An unsaturated hydrocarbon $X$ absorbs two hydrogen molecules on catalytic hydrogenation,and also gives the following reaction: $X$ $\xrightarrow[Zn/H_2O]{O_3} A$ $\xrightarrow{[Ag(NH_3)_2]^{+}} B$ ($3$-oxo-hexane dicarboxylic acid). $X$ will be

What is the number of moles of $sp^2$ hybrid carbon atoms in one mole of $hexa-1,4-diyne$?