Nomenclature, Isomerism, Conformation — Prelims Questions

Which of the following represents the correct IUPAC name for the compound: CH\(_3\)-CH\(_2\)-CH(CH\(_3\))-CH\(_2\)-CH\(_2\)-CH\(_3\)?

How many structural isomers are possible for C\(_5\)H\(_12\)?

Which of the following conformations of n-butane, viewed along the C2-C3 bond, is the most stable?

Which of the following statements about the chair conformation of cyclohexane is INCORRECT?

Which of the following pairs represents structural isomers?

What is the IUPAC name of the following compound: CH\(_3\)-CH\(_2\)-CH(CH\(_2\)CH\(_3\))-CH(CH\(_3\))-CH\(_2\)-CH\(_3\)?