$ . . . . . . $ compound is slowly oxidized by air in the presence of light to an extremely poisonous gas, carbonyl chloride.

Ethylene dichloride $(ClCH_2-CH_2Cl)$ and ethylidene chloride $(CH_3-CHCl_2)$ are isomeric compounds. Identify the statement which is not applicable to both of them.

The major product of the following reaction is:

Isopropyl chloride undergoes hydrolysis by which mechanism?

$1-$chlorobutane on treatment with alcoholic potash forms

The order of reactivity of the following compounds towards dilute aqueous $KOH$ in $SN_1$ reaction is
$I$. $CH_3CH_2CH_2CH_2Br$
$II$. $CH_3CH_2CHBrCH_3$
$III$. $(CH_3)_2CHCH_2Br$
$IV$. $(CH_3)_3CBr$