The product obtained by the reaction of propene with $HBr$ in the presence of peroxide is......

In the catalytic reduction of hydrocarbons,which catalyst is mostly used?

Which $\pi$-bond will be reduced first when the compound shown below undergoes catalytic hydrogenation?

How many single and double bonds are present in ethene $(C_2H_4)$? Where are they located?

The addition of $HI$ to the double bond of propene yields isopropyl iodide and not $n$-propyl iodide because the addition proceeds through the formation of:

An alkene $A$ on reaction with $O_{3}$ and $Zn-H_{2}O$ gives propanone and ethanal in equimolar ratio. Addition of $HCl$ to alkene $A$ gives $B$ as the major product. The structure of product $B$ is: