Alkyl halide is converted into alkyl isocyanide by reaction with

Number of moles of $AgCl$ formed in the following reaction is $X$. Identify $X$ from the given reaction.

Which of the following compounds cannot undergo dehydrohalogenation?

Which of the following is not a product of the given reaction?
$1$-chloro-$2$-methylcyclohexane $\xrightarrow{C_2H_5OH/\Delta}$ ?

Arrange the following alkyl halides in the increasing order of their reactivity towards nucleophilic substitution reaction:
$(I)$ $CH_3CH_2CH(Cl)CH_3$
$(II)$ $CH_2=CHCH(Br)CH_3$
$(III)$ $CH_2=CHCH(Cl)CH_3$
$(IV)$ $CH_3CH=C(Br)CH_3$

Out of $C_{6}H_{5}CH_{2}Cl$ and $C_{6}H_{5}CHClC_{6}H_{5},$ which is more easily hydrolysed by aqueous $KOH$?