Alcohols, phenols and ethers are important organic compounds that are closely related to water in structure, so they are called derivatives of water. Alcohols and phenols both contain the hydroxyl group (-OH), which makes them hydroxy derivatives of alkanes and benzene respectively. In ethers, both hydrogen atoms of water are replaced by alkyl or phenyl groups to form the ether structure (R–O–R′).
These compounds are very important for students to learn because they are widely used in daily life, medicines, industries, perfumes, and laboratory work. In this unit, you will learn their structure, properties, preparation methods, and important reactions in a simple and easy way for better exam preparation.
📥 Download Class 12 Chemistry Unit 11 – Alcohols, Phenols and Ethers
Skip to PDF contentStudents can easily download the complete notes of Unit 11: Alcohols, Phenols and Ethers in PDF format. These notes are specially designed for exam preparation and include well-organized content for better understanding.
👉 What’s included in this PDF:
- Complete chapter notes
- MCQs for practice
- Short questions & answers
- Long questions for exam preparation
👉 Click the download Class 12 Chemistry Unit 11 Notes
❓ Frequently Asked Questions (FAQ)
Q1: What are alcohols, phenols and ethers?
Alcohols, phenols and ethers are organic compounds that contain oxygen and are considered derivatives of water with different structures and properties.
Q2: What is the functional group of alcohols?
The functional group of alcohols is the hydroxyl group (-OH) attached to a saturated carbon atom.
Q3: How are alcohols and phenols different?
Alcohols have -OH attached to an alkyl group, while phenols have -OH directly attached to a benzene ring.
Q4: What are ethers?
Ethers are organic compounds in which an oxygen atom is bonded to two alkyl or aryl groups (R–O–R′).
Q5: Why are alcohols important?
Alcohols are widely used in medicines, fuels, solvents, perfumes, and industrial chemical processes.
📝 MCQs – Unit 11: Alcohols, Phenols and Ethers
1. Alcohols and phenols are:
(a) Halogen derivatives
(b) Hydroxy derivatives of hydrocarbons ✅
(c) Nitrogen derivatives
(d) Carbonyl compounds
The general formula of alcohol is:
(a) ROR
(b) ROH ✅
(c) PhOH
(d) RCOOH
3. The general formula of phenol is:
(a) ROH
(b) PhOH ✅
(c) ROR
(d) RCHO
4. Addition of 10% methanol to ethanol is called:
(a) Distillation
(b) Denaturation ✅
(c) Esterification
(d) Hydrogenation
5. In Williamson’s synthesis, alcohol reacts with:
(a) Metallic magnesium
(b) Metallic sodium ✅
(c) Concentrated H₂SO₄
(d) Dilute alkali
6. In Dow’s process, phenol is prepared from:
(a) Ethanol
(b) Propanol
(c) Chlorobenzene ✅
(d) Acetone