Ethane is subjected to a combustion process. During the combustion,the hybrid state of carbon changes from

Which of the following reactions produce an alkane as the product?

What is $Z$ in the following reaction?
$CH_3-CH_2-CO_2^{\ominus} Na^{\oplus} \stackrel{NaOH / CaO}{\longrightarrow} Z$

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:

Heating of alkanes with fuming sulphuric acid or oleum at high temperature,which forms sulphonic acid,is called

$A$ dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is