What is the main component of $LPG$?

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:

In Wurtz reaction,alkyl halides react with:

$Ph^{-}MgBr + CH_3-CH(OH)-CH_3 \to A$. What is the product $A$?

What is the minimum number of carbon atoms required for an alkane to contain a quaternary carbon atom?

$A$ compound $A$ contains $C$ and $H$ only and has a molecular mass of $72$. Its photochlorination gives a mixture containing only one monochloro and two dichloro hydrocarbons. What is its $IUPAC$ name?