Question

Classify the following compounds based on the pattern of the carbon chain and give their structural formula:

(i) Propane

(ii) Benzene

(iii) Cyclobutane

(iv) Furan

Answer 1

1. Propane is an open chain or a cyclic compound because it contains an open chain.
   CH₃-CH₃-CH₃ [Propane].
2. Benzene is a carbocyclic compound because it contains carbon atoms cyclic ring of 6 atoms.
   (Benzene)
3. Cyclobutane is a carbocyclic compound.
    
   \[\begin{array}{cc} \ce{CH2 - CH2}\\ |\phantom{........}|\\
   \ce{CH2 - CH2}
   \phantom{.}\\ \end{array}\]
   (Cyclobutane)
4. Furan is a heterocyclic compound because in the cyclic chain one atom is an oxygen atom. HC – CH
   
   (Furan)