The octane number $100$ is assigned to .............

Match the column and find the correct answer:

Column-$I$	Column-$II$
$i$. $n$-Butane $\to 2$-methylpropane	$A$. Free radical substitution
$ii$. $CH_4 + Cl_2 \xrightarrow{hv} CH_3Cl + HCl$	$B$. Wurtz reaction
$iii$. $R-COONa \xrightarrow{\text{soda-lime}} R-H$	$C$. Isomerism
$iv$. $R-X + Na \xrightarrow{\text{Ether}} R-R$	$D$. Decarboxylation

Which of the following is $NOT$ formed when a mixture of methyl bromide and $n$-propyl bromide is treated with sodium metal in dry ether?

Alkanes are generally resistant to oxidation under mild conditions. What is your opinion regarding the following reaction?
$C_4H_{10(g)} + \frac{13}{2}O_{2(g)} \to 4CO_{2(g)} + 5H_2O_{(l)}$

Anhydrous sodium acetate on heating with sodalime gives

Do you expect the carbon hydrides of the type $C_nH_{2n+2}$ to act as 'Lewis' acid or base? Justify your answer.