Elimination of bromine from $2-$bromobutane results in the formation of

What will be the product in the following reaction?
$1$-chloro-$1$-methylcyclohexane $\xrightarrow{H_2O}$ ?

The hydrolysis of optically active $2-$bromobutane with aqueous $NaOH$ results in the formation of:

Identify the correct reactivity order for $S_N1$ reaction for the following compounds:

Bottles containing $C_6H_5I$ and $C_6H_5CH_2I$ lost their original labels. They were labelled $A$ and $B$ for testing. $A$ and $B$ were separately taken in test tubes and boiled with $NaOH$ solution. The end solution in each tube was made acidic with dilute $HNO_3$ and then some $AgNO_3$ solution was added. Substance $B$ gave a yellow precipitate. Which one of the following statements is true for this experiment?

When $2-$bromobutane reacts with alcoholic $KOH$,the reaction is called