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Summary Class 12 Chemistry Complete Revision Notes for CBSE Boards & NEET (Short and Easy)

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These are clear and concise Class 12 Chemistry revision notes prepared for CBSE Board Exams and NEET preparation. The notes cover important concepts from organic, inorganic, and physical chemistry in an easy-to-understand format. Important formulas, reactions, and key points are summarized for quick revision before exams. These notes are useful for students who want short, structured, and exam-oriented chemistry preparation.

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Institution
Sixth Year / 12th Grade
Course
Chemistry

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Class 12 Chemistry – Alcohols, Phenols & Ethers
Reaction Summary


Preparation of Alcohols
From Reagent / Catalyst Product formed
Alkene Dilute acid (H+ / H2SO4) Alcohol (Markovnikov)
Alkene BH3 + H2O2 / NaOH Alcohol (Anti■Markovnikov)
Aldehyde H2/Ni or NaBH4/LiAlH4 Primary alcohol
Ketone H2/Ni or NaBH4/LiAlH4 Secondary alcohol
Carboxylic acid LiAlH4 Primary alcohol
Grignard + carbonyl Hydrolysis Alcohol



Reduction Summary
Compound Reagent Converts into
Aldehyde NaBH4 / LiAlH4 Primary alcohol
Ketone NaBH4 / LiAlH4 Secondary alcohol
Carboxylic acid LiAlH4 Primary alcohol
Ester LiAlH4 Alcohol



Oxidation of Alcohols
Alcohol type Oxidising agent Product
Primary PCC Aldehyde
Primary KMnO4 / K2Cr2O7 Carboxylic acid
Secondary CrO3 / KMnO4 Ketone
Tertiary - No oxidation



Dehydration
Reactant Catalyst Product
Alcohol Conc. H2SO4 / H3PO4 + heat Alkene



Phenol Preparation
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Uploaded on
March 14, 2026
Number of pages
2
Written in
2025/2026
Type
SUMMARY

Subjects

  • class 12 notes
  • chemistry notes
  • short notes
  • revision notes
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