Question

The molecular formulae of some organic compounds are given below. Which of these compounds contains an aldehyde group?
(a) C₃H₈O
(b) C₃H₆O₂
(c) C₃H₆O
(d) C₃H₇Cl

Answer 1

C₃H₆O contains an aldehyde group, as the compound satisfies the general formula of the aldehydes C_nH_2nO.