Question

Which of the following belongs to homologous series of alkynes?
C6H6, C2H6, C2H4, C3H4.
(a) C6H6
(b) C2H4
(C) C2H6
(d) C3H4

Answer 1

Answer:

A) C6H6

Option A is the correct option.

As this one fulfills CnH(2n-2).

Answer 2

(d) C3H4 belongs to homologous series of alkynes.

• Alkynes are characterized by the presence of three bonds between the carbon atoms. The formula representing alkynes is CnH2n-2.
• Among the given options, C6H6 is benzene, which has double bonds between alternate carbon atoms.
• C2H4 is also an alkene, due to the presence of a double bond in its structure.
• C2H6 is an alkane, as there are only single bonds between all the atoms of this compound.
• C3H4 correctly fits into the general formula of alkynes and hence it belongs to the homologous series of alkynes.