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

One mole of an alkane $(x)$ requires $8$ mole oxygen for complete combustion. The sum of the number of carbon and hydrogen atoms in the alkane $(x)$ is . . . . . . .

$A$ compound reacts with $Cl_2$ to give product $(B)$,and the reaction of product $(B)$ with $(Zn + \text{dilute } HCl)$ gives back the original substance $(A)$. Give the structures of $(A)$ and $(B)$.

What is the number of tertiary carbon atoms in a molecule of isobutane?

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

What is the minimum quantity (in grams) of methyl iodide required for preparing one mole of ethane by Wurtz reaction?
(Atomic weight of iodine $= 127$)