Question

Homologous series among the following is:

• A. CH3OH and C2H5OH
• B. CH3COOH and CH3COCH3
• C. C2H5CHO and CH3OCH3
• D. C3H8 and C4H9OH

Hint:

Remember: In a homologous series, the compounds have the same functional group and differ by a CH2 unit.

Answer 1

The Correct Option is A

Step 1: What is a Homologous Series?
A homologous series consists of organic compounds with the same functional group and similar chemical properties. The members of the series differ by a CH2 unit.

Step 2: Identifying the Homologous Series
- CH3OH (methanol) and C2H5OH (ethanol) are alcohols. They differ by a CH2 unit. Hence, they belong to the same homologous series (Alcohols).
- Other options do not show a consistent functional group or differ by a CH2 unit.

Step 3: Conclusion
The correct homologous series is CH3OH and C2H5OH.
\[ \boxed{\text{CH3OH and C2H5OH}} \]