Which products are obtained from the electrolysis of an aqueous mixture of sodium ethanoate and sodium propanoate?

The reaction conditions leading to the best yields of $C_2H_5Cl$ are

The reactions which produce alcohol as the product are:
$A$. $CH_{4} + O_{2} \xrightarrow{Mo_{2}O_{3}}$
$B$. $2CH_{3}CH_{3} + 3O_{2} \xrightarrow[\Delta]{(CH_{3}COO)_{2}Mn}$
$C$. $(CH_{3})_{3}CH \xrightarrow{KMnO_{4}}$
$D$. $2CH_{4} + O_{2} \xrightarrow{Cu/523 \ K/100 \ atm.}$
$E$. $CH_{3}CH=CHCH_{3} \xrightarrow{KMnO_{4}/H^{+}}$
Choose the correct answer from the options given below:

Identify the major product of the following reaction: $CH_3-CH_2-COONa \xrightarrow{\text{Kolbe's Electrolysis}}$

Identify the reagent $(A)$ used in the following reaction.

Marsh gas mainly contains .........