The pair of compounds that belongs to the same homologous...
The pair of compounds that belongs to the same homologous series is
C2H6 and C4H10
C3H8 and C3H6
C2H4 and C4H10
C4H10 and C5H10
Correct answer is A
In the given options, C2H6 (ethane) and C4H10 (butane) both belong to the same homologous series, as they have the same alkane functional group CnH2n+2 and differ by a CH2 group:
C2H6: Ethane
C4H10: Butane
Both of these compounds are members of the alkane homologous series.