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Chapter 32 of 41
Syllabus

Alcohols, Phenols and Ethers

Telangana Open School (TOSS) · Class 12 · Chemistry

Complete topic list for Alcohols, Phenols and Ethers in Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

44 questions30 flashcards5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Chemistry

Topics in Alcohols, Phenols and Ethers

1

Classification and Nomenclature of Alcohols

  • Alcohols are classified as primary (1°), secondary (2°), or tertiary (3°) based on the number of alkyl groups attached to the carbon bearing the -OH group.
  • Primary alcohols have one alkyl group, secondary have two, and tertiary have three.
  • IUPAC names of alcohols end with '-ol'. The longest carbon chain containing the -OH group is selected, and numbering starts from the end nearest to the -OH group.
2

Preparation of Alcohols

  • Haloalkanes undergo hydrolysis with aqueous KOH or NaOH to form alcohols.
  • Alkenes undergo acid-catalyzed hydration following Markovnikov’s rule to give alcohols.
  • Oxymercuration-demercuration gives Markovnikov addition without rearrangement.
3

Physical Properties and Reactions of Alcohols

  • Alcohols have higher boiling points than alkanes and haloalkanes due to intermolecular hydrogen bonding.
  • Lower alcohols are soluble in water due to H-bonding with water molecules.
  • Alcohols act as weak acids and form alkoxides with active metals like Na or K.
4

Phenols: Nomenclature, Preparation, and Reactions

  • Phenol is C₆H₅OH; the -OH group is directly attached to the benzene ring.
  • IUPAC naming uses 'phenol' as parent; substituents are numbered relative to -OH.
  • Prepared in lab by hydrolysis of diazonium salts or alkali fusion of benzenesulphonate.

Key Concepts

Central concept: Alcohols, Phenols and Ethers

AlcoholsPhenolsEthers

Frequently Asked Questions

What are the important topics in Alcohols, Phenols and Ethers for Telangana Open School (TOSS) Class 12 Chemistry?
Alcohols, Phenols and Ethers covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Alcohols, Phenols and Ethers — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 44 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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