Paraffin is soluble in .........

Identify all the possible monochloro structural isomers expected to be formed on free radical monochlorination of $(CH_3)_2CHCH_2CH_3$.

Given below are two statements :
Statement-$I$ : $2-$methylbutane on oxidation with $KMnO_4$ gives $2-$methylbutan$-2-$ol.
Statement-$II$ : $n-$alkanes can be easily oxidised to corresponding alcohol with $KMnO_4$.
Choose the correct option:

An alkane forms isomers if the number of carbon atoms is at least

The molecular mass of a hydrocarbon is $86 \ g/mol$. What is the number of its possible structural isomers?

Complete the following reactions:
$(1)$ $CH_3CH_2CH_2CH_2Cl + H_2 \xrightarrow{Zn, H^{+}}$
$(2)$ $CH_3CH_2CH_2CH_3 \xrightarrow[HCl, \Delta]{Anhy. AlCl_3}$