The reaction of $3$-bromocyclohexene with $HBr$ yields $P_1$ and $P_2$ as major dibromo products. What is the relationship between $P_1$ and $P_2$?

Which one of the following reagents is not suitable for the elimination reaction shown in the image?

The reaction of $1$-chlorobutane with alcoholic potash gives $......$.

$A$ bottle containing $C_6H_5I$ and $C_6H_5CH_2I$ has lost its label. To identify them,samples $A$ and $B$ are taken in separate test tubes and boiled with $NaOH$ solution. Finally,the solution in each test tube is acidified with dilute $HNO_3$ and then a few drops of $AgNO_3$ solution are added. Substance $B$ gives a yellow precipitate. Which statement is correct for this process?

Write a note on nucleophilic substitution reactions.

Which of the following compounds will produce a precipitate with $AgNO_3$?