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

$\underset{C_7H_{14}}{(A)} \xrightarrow[Zn/AcOH]{O_3} (B) + (C)$
Compound $(A)$ exists as geometrical isomers and $(B)$ gives the Cannizzaro reaction. $(A)$ will be:

Propylene on hydrolysis with sulphuric acid forms

Which of the following can be used as the test for unsaturation with regard to colour change of reaction?

The product of the following reaction will be:

$A$ gas that decolourises $KMnO_4$ solution but gives no precipitate with ammoniacal cuprous chloride is