Which of the following reagents convert propene to $1-$propanol?

Identify $Z$ in the following reaction series: $CH_3-CH_2-CH_2-Br$ $\xrightarrow{NaOH(aq.)} (X)$ $\xrightarrow[Heat]{Al_2O_3} (Y)$ $\xrightarrow{HOCl} (Z)$

What is $X$ in the following reaction?

Identify the product of ozonolysis of $but-2-ene$ from the following:

Which of the following compounds is obtained when cyclohexene is oxidized using $KMnO_4$ in dilute $H_2SO_4$?

$A$ dibromide $X$ $(C_4H_8Br_2)$ on dehydrohalogenation gave $Y$,which on reduction with $Z$ gave a non-polar isomer of $C_4H_8$. What are $X$ and $Z$ respectively?