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NCERT Solutions Class 12 Chemistry - Chapter 7 Alcohols, Phenols and Ethers - PDF Download

JEE Mains & Advanced

NCERT solutions for class 12 chemistry chapter 7 Alcohols, Phenols and Ethers is a mandatory study material for all students studying in class 12 chemistry. These NCERT solutions for Class 12 chemistry Chapter 11 alcohols,phenols and ethers help the students to practice important structures and formulas of the aldehyde, ketones, carboxylic acid topic by providing them with exercises and their solution. By referring to these solutions, students will be able to strengthen their conceptual knowledge.

After completing this chapter on Alcohol, Phenols and Ethers using NCERT Solutions prepared by eSaral’s subject expert, Students can write the names of Alcohols, Phenols and Ethers using the IUPAC System of Nomenclature.

Once you’ve finished the chapter, you’ll learn -

  • naming Alcohols, Phenols and Esters based on IUPAC System of Nomenclature

  • reactions to alcohols from alkene, aldehyde, ketone and carboxylic acid

  • reactions to phenols from haloeres, benzene sulfonic acids, diazepam salts and cumene

  • reactions to ethers from alcohols, alkyl-halides and sodium alkoxide/aryloxide

  • physical properties of Alcohol, Phenol and Ester based on their structure

  • chemical reactions of the three classes of compounds based on functional groups

NCERT Solutions for Class 12 Chemistry Chapter 7 Subtopics

Subtopics of Class 12 Chemistry Chapter 11 – Alcohols, Phenols and Ethers are given below:

  • Classification

  • Nomenclature 

  • Structures of Functional Groups

  • Alcohols and phenols

  • Some Commercially Important alcohols

  • Ethers

Classification: Alcohol and phenols can be classified as mono-, di- or polyhydric compounds based on whether they have one, two, three or multiple hydroxyl groups in their molecular structure.

Nomenclature: In this section, common and IUPAC names of alcohols, phenol and ethers will be discussed. 

Structures of Functional Groups: in this section, structural aspects like bond angle, bond length etc. of methanol, phenol and methoxymethane will be discussed.

Alcohols and phenols: in this section, following subtopics have been discussed

  • Preparation of Alcohols

  • Preparation of Phenols

  • Physical properties of alcohols and phenols

  • Chemical reactions of alcohols and phenols

Some Commercially Important alcohols: There are a few alcohols that are really important and have a lot of uses in different industries because of their special qualities and how they react. These include things like methanol and ethanol etc.

Ethers: in this section, following subtopics have been discussed

  • Preparation of Ethers

  • Physical properties Ethers

  • Chemical reactions of Ethers

Key Points of Class 12 Chemistry Chapter 7 NCERT Solutions

  • Alcohols can be made by adding an acid to alkenes and then hydrolyzing them. Carbonyl compounds can be made by reducing them with a catalytic reduction process and then using Grignard reactions. Phenols can be made by substituting halogens in haloarenes and adding sulphonic acids to aryl sulfonic acids, and then using a –OH group to hydrolyze them. Finally, cumene can be made industrially.

  • The boiling point of alcohols is higher than that of other compounds, such as hydrogen, ethers and halalkanes, of similar molecular weights. Alcohols, phenols, and ethers are able to form hydrogen bonds with water, which makes them water soluble.

  • The acidic nature of alcohols and phenols is due to the presence of electron withdrawing groups in alcohols, which increase its acidic strength, and electron releasing groups in phenols, which decrease it.

  • The nucleophilic substitution of alcohols with hydrogen halides results in the formation of alkyl halides. The dehydration of alcohols result in rise to alkenes.Primary alcohols are oxidised to yield aldehydes, which have mild oxidising agents. Carboxylic acids have strong oxidising agents. Secondary alcohols are oxidized to result in preparation of ketones, and tertiary alcohols are resistant to oxidation.

  • Ethers can be prepared (i) by dehydration of alcohols, and (ii) by Williamson synthesis. Their boiling points are similar to those of alkanes, and their solubility is similar to that of alcohols of the same molecular weight. The C–O bond can be broken by hydrogen halide. When the alkoxy group is substituted by an electrophilic.

Importance of NCERT Solutions for Class 12 Chemistry Chapter 7 PDF Download

NCERT Solutions for Alcohol, Phenol and Ether Class 12 Chemistry Chapter “Alcohol” are very important for students studying this subject. Here are the main reasons why NCERT Solutions are very useful for students:

Complete coverage: NCERT Solutions explain all the topics in the entire syllabus so that students don’t miss any important concepts in the chapter.

Clear and understanding: NCERT solutions are written in clear and concise language, making it easier for students to understand complex topics.

Step-by-step explanation and examples: NCERT solutions provide step by step explanations and examples so that students can easily understand the concepts.

Accuracy and authenticity: NCERT Solutions have been prepared by experts in the field of the subject, so students can trust that the answers to their questions are correct.

Exam preparation: The solutions act as a useful tool for exam preparation. It helps students to understand the concepts clearly and provides solutions to the questions which are likely to be included in the exams. 

Practice questions: The solutions contain various practice questions and exercises which help students to test their comprehension of the chapter. By solving these questions, students can reinforce the concepts and enhance their problem-solving abilities. 

Time management: Students can use NCERT Solutions to manage their study time efficiently. By understanding the topics clearly, students can focus on the important areas and avoid distractions. 

Self assessment and improvement: Students can use these solutions to assess their performance. By solving the questions, students can identify their weak points and work on enhancing their understanding of the topics.

Frequently Asked Questions

Question 1: What are alcohols, phenols, and ethers?

Answer 1: Organic compounds such as alcohols, phenols and ethers are hydroxy compounds. All hydroxy compounds have a hydroxyl (- OH) functional group. This functional group is responsible for their specific chemical properties. R-OH is the standard formula for alcohols. The general formula for phenols is Ar-OH (Ar represents an aromatic ring). The general formula for ethers is R- O-R' (where R and R' are alkyl or aryl groups).

Question 2: What is the difference between Alcohols, Phenols, and Ethers?

Answer 2: The main difference between alcohols and ethers is that alcohols have a saturated carbon and phenols have a saturated carbon. The hydroxyl group attached to alcohols is (-OH) and phenols have an aromatic ring (-OH). Ethers have 2 alkyl or an aryl groups attached to an oxygen atom.