Arrange the following conformational isomers of $n$-butane in order of their increasing potential energy:

Which one of the following conformations of cyclohexane is chiral?

Statement $I$: Staggered conformation of ethane is more stable than the eclipsed conformation.
Statement $II$: The torsional strain in staggered conformation is more than in the eclipsed conformation.

Which of these factors does not govern the stability of a conformation in acyclic compounds?

Which one of the following is the most energetic conformation of cyclohexane?

Which conformation of cyclohexane is chiral?