Methyl a -D-glucoside and methyl-8-buglucoside are

Methyl- α-D-glucoside and methyl β-D-glucoside are : epimers, anomers, enantiomers, conformational diastereomers

Methyl- alpha -D-glucoside and methyl- beta-D- glucoside are

Methyl -alpha-D- glucoside and methyl -beta-D- glucoside are:

Methyl -alpha-D- glucoside and methyl -beta-D- glucoside are:

Methyl amine is

Out of methyl bromide and methyl chloride which has higher boiling point.