Octane number has $0$ value for

What is the final product obtained by the reduction of glycerol with hydriodic acid $(HI)$?

The number of shared pairs of electrons in propane is

Determine the structure and name of $A$ and $B$ in the following reaction sequence:
$(A)$ $\xrightarrow{NaOH, -H_2O} (B)$ $\xrightarrow{NaOH, CaO, \Delta} CH_3CH_3$

In the preparation of alkanes,a concentrated aqueous solution of sodium or potassium salts of saturated carboxylic acids is subjected to:

$A$ mixture of all isomers possible from the mono-chlorination of the structure $n$-pentane $(CH_3-CH_2-CH_2-CH_2-CH_3)$ is subjected to fractional distillation. How many fractions will be obtained?