Ethylidene chloride on treatment with aqueous $KOH$ gives:

The major product of the following reaction is:

Choose the false statement from the following about $S_N1$ reaction mechanism.

Identify the product formed when tertiary butyl bromide reacts with alcoholic $NH_3$ solution?

The reaction $CH_3-CH(C_6H_5)-CH(Br)-C_6H_5 \xrightarrow{alc.KOH} A$. Identify the product $A$.

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