Question

Molecules: General formula. (n represents the number of carbon atoms in chain)1. Aldehydes: $C_n{H}_{2n}O$2. Carboxylic acids: $C_n{H}_{2n}{O}_2$3. Cycloalkanes: $C_n{H}_{2n}$4. Alkanes: $C_n{H}_{2n+2}$Which of the above matching is correct? Choose from the options given below:

• (A) 1 and 2 only
• (B) 1 and 4 only
• (C) 1, 2 and 4 only
• (D) All are correct

Answer 1

The Correct Option is D

Explanation:
All the given options are correctly matched.Aldehyde has $C_n{H}_{2}O$ general formula. Example: Ethanal $-C_2{H}_{4}O,n=2$Carboxylic acid has $C_n{H}_{2n}{O}_2$ general formula. Example: Propionic acid $-C_3{H}_6{O}_2,n=3$Cycloalkane has $C_n{H}_{2n}$ general formula. Example: Cyclobutane $-C_4{H}_8,n=4$Alkane also has $C_n{H}_{2n+2}$ general formula. Example: Ethane $-C_2{H}_6,n=2$Hence, the correct option is (D).