The Newman projection of the staggered conformation of ethane is:

What are $X$ and $Y$ in the following reaction sequence?
Iso-pentane $\xrightarrow{KMnO_4} X$ $\xrightarrow[358 \ K]{20 \% H_3PO_4} Y$

Which of the following reactions is most exothermic?

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:

Consider the following:
Statement-$I$ : Kolbe's electrolysis of sodium propionate gives $n$-hexane as product.
Statement-$II$ : In Kolbe's process,$CO_2$ is liberated at the anode and $H_2$ is liberated at the cathode.
The correct answer is:

By $Wurtz$ reaction,a mixture of $methyl \text{ } iodide$ and $ethyl \text{ } iodide$ gives: