Reaction of ethyl chloride with sodium leads to

Halogenation of alkanes is:

Explain why lower alkanes are gaseous in state and higher alkanes are liquid in state?

Which of the following has the highest boiling point?

Assertion $(A)$: Cyclohexane is the most stable cycloalkane.
Reason $(R)$: Cyclopropane and cyclobutane are less stable due to angle strain and torsional strain.
The correct answer is

Identify $D$ and $E$ in the following reaction: $CH_3-CH(CH_3)-CH(CH_3)-CH_3 \xleftarrow[ether]{Na} R'-Br$ $\xrightarrow{Mg} D$ $\xrightarrow{H_2O} E$