Which two of the following compounds belong to same homologous series? C2H6O2,C2H6O,C2H6,CH4O
C2H6O & C2H6O2
C2H6O & CH4O
CH4O & C2H6O2
C2H6 & CH4O
Two members of a homologous series differ from each other by -CH2 group. Hence, CH4O and C2H6O are from a homologous series.
The number of compounds given below that belong to same homologous series are CH2O2, C3H8O, C2H4O2, C2H6, C3H6O2, C5H10O2, C3H8