The major product $(P)$ in the reaction
$Ph-CH=CH-CH_2Br \xrightarrow{HBr} ?(P)$
$[$where $Ph$ is $-C_6H_5]$ is ....

What is the product formed by the reaction of propene with $Br_2$ in $CCl_4$?

Peroxide effect is observed with the addition of $HBr$ but not with the addition of $HI$ to unsymmetrical alkene because

Consider the following reactions. What is $A$?
| Reaction | Observation |
| :--- | :--- |
| $A \ (C_7H_{14}) \xrightarrow{\text{ozonolysis}} B + C$ | |
| $B \xrightarrow{I_2 + NaOH, \Delta} \text{yellow ppt}$ | |
| $B \xrightarrow{Ag_2O, \Delta} \text{silver mirror}$ | |
| $C \xrightarrow{I_2 + NaOH, \Delta} \text{no yellow ppt}$ | |
| $C$ $\xrightarrow{LiAlH_4} D$ $\xrightarrow{\text{anhydrous } ZnCl_2, \text{conc. } HCl} \text{white turbidity within 5 minutes}$ | |

Reactivity order of alkenes towards electrophilic addition reaction:
$I: CH_2=CH_2$
$II: CH_3-CH=CH_2$
$III: CH_3-C(CH_3)=CH_2$
$IV: CH_2=CH-Cl$

The product $(A)$ of the given alkoxymercuration-demercuration reaction is: