What are $X$ and $Y$ in the following reaction?
$Pent-2-ene \xrightarrow[(ii) Zn / H_2O]{(i) O_3} X + Y$

$A$ compound $X$ absorbs $2$ moles of hydrogen and $X$ upon oxidation with $KMnO_4 \mid H^{+}$ gives the products shown below:
$CH_3-CO-CH_3$,$CH_3-COOH$ and $CH_3-CO-CH_2-CH_2-COOH$.
The total number of $\sigma$ bonds present in the compound $X$ is . . . . . .

In the following sequence of reactions,the alkene affords the compound $B$.
$CH_3-CH=CH-CH_3$ $\xrightarrow{O_3} A$ $\xrightarrow[Zn]{H_2O} B$
The compound $B$ is:

Which method can be used to prepare $Propane$ from $Propene$?

In the reaction $CH_3CH_2CH_2Br$ $\xrightarrow{aq. NaOH} (X)$ $\xrightarrow{Al_2O_3, \text{Heat}} (Y)$ $\xrightarrow{HOCl} (Z)$,what is $Z$?

The product of the following reaction is: