Read and download the CBSE Class 12 Chemistry Alcohol Phenol Ether Exam Notes. Designed for 2025-26, this advanced study material provides Class 12 Chemistry students with detailed revision notes, sure-shot questions, and detailed answers. Prepared by expert teachers and they follow the latest CBSE, NCERT, and KVS guidelines to ensure you get best scores.
Advanced Study Material for Class 12 Chemistry Unit 7 Alcohols, Phenols and Ethers
To achieve a high score in Chemistry, students must go beyond standard textbooks. This Class 12 Unit 7 Alcohols, Phenols and Ethers study material includes conceptual summaries and solved practice questions to improve you understanding.
Class 12 Chemistry Unit 7 Alcohols, Phenols and Ethers Notes and Questions
CBSE Class 12 Chemistry Alcohol Phenol Ether Exam Notes. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.
REASONING
Q1.Arrange the following compounds increasing order of boiling point pentanol, butanol, butan 2- ol, propan-1-ol, methanol
Ans.Methanol < ethanol < propanol < butan 2-ol (branch) < butanol < pentanol. B.P is directly related to moleculer mass and indirectly to branching.
Q2.Arrange the following in the increasing order of property given:
(a)CH3CH2OH, CF3CH2OH, CCl3CH2OH –– Acid strength.
(b)2 methyl-2-propanol, 1 butanol and 2-butanol-reactvity towards Na.
Ans.(a) Due to – I effect of the halogen the O – H bonds weakens and release of a proton. F is more electronegative than Cl.
(b)Reactivity depends on strength of Acidity of Alcohols with Na 1 butanol > 2-butanol > 2 methyl - 2 - propanol (+I effect)
Q3.Unlike phenols, alcohols are easily protonated.
Ans.Due to resonance, the lone pairs of electrons on O atoms are delocatised over the benzene ring while in alcohols, they are easily available for protonation.
Q4.How do you account for the fact that unlike phenol, 2, 4 dinitro phenol and 2, 4, 6 - trinitrophenol are soluble in Na2CO3 (aq) solution.
Ans.Presence of 2 NO2 and 3 NO2 (strong EWG) in above nitro compound which makes them more acidic and will easily soluble in Na2CO3.
Q5.Alcohols react with halogen acid or phosphorous halides to form haloalkanes but phenol does not form halobenzene.
Ans. 
aliphatic alcohol carbon atom has sp3 hybridisation, Phenol has sp2 hydridisation at C – OH bond which is also get double boud character by resonance. So it cannot give Nucleophilic substitution reactions.
Q6.Explain why dehydration of alcohols to form alkenes is always carried out with conc. H2SO4 and not with conc. HCl or HNO3.
Ans.Reaction with acid will give carbocation. In case HSO4 – being non-nucleophile cannot substitute the Halogen group but in case Cl– will give substition rx. in presence of HNO3 as NO3- is a nucleophile. HCl being oxidising agent, and oxidise alcohol to aldehyde then to acid.
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Important Practice Resources for Class 12 Chemistry
CBSE Class 12 Chemistry Unit 7 Alcohols, Phenols and Ethers Study Material
Students can find all the important study material for Unit 7 Alcohols, Phenols and Ethers on this page. This collection includes detailed notes, Mind Maps for quick revision, and Sure Shot Questions that will come in your CBSE exams. This material has been strictly prepared on the latest 2026 syllabus for Class 12 Chemistry. Our expert teachers always suggest you to use these tools daily to make your learning easier and faster.
Unit 7 Alcohols, Phenols and Ethers Expert Notes & Solved Exam Questions
Our teachers have used the latest official NCERT book for Class 12 Chemistry to prepare these study material. We have included previous year examination questions and also step-by-step solutions to help you understand the marking scheme too. After reading the above chapter notes and solved questions also solve the practice problems and then compare your work with our NCERT solutions for Class 12 Chemistry.
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