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CBSE 4 min read30 August 2026

CBSE कक्षा 12 Chemistry तैयारी 2027: Organic, Inorganic, Physical Tips

Class 12 Chemistry board exam 2027। Organic reactions, Physical numericals, Inorganic tables scoring strategy।

CBSE Class 12 Chemistry का paper 70 marks (theory) + 30 marks (practical) का होता है। Chemistry तीन parts में divided है — Physical, Inorganic, और Organic। सबसे अच्छी बात यह है कि हर part की strategy अलग है, और सही approach से scoring बहुत easy हो जाती है।

Chapter-Wise Marks Weightage 2027

UnitTopicsMarks
Solid State + SolutionsSolid State, Solutions10
Electrochemistry + Chemical KineticsElectrochemistry, Kinetics09
Surface ChemistryColloids, Catalysis04
Metallurgy + p-BlockIsolation, p-Block Elements12
d & f Block + CoordinationTransition Elements, Coordination Compounds09
Haloalkanes to BiomoleculesOrganic Chemistry chapters19
Polymers + Chemistry in Everyday LifeApplied Chemistry07
Total70

Physical Chemistry Strategy (23 Marks)

Physical Chemistry numericals-based है। Formulas याद हैं तो scoring guaranteed।

Solutions (Important Numericals)

  • Raoult's Law और colligative properties
  • Molarity, Molality, Mole Fraction conversions
  • Elevation in boiling point, Depression in freezing point
  • Osmotic pressure numericals

Electrochemistry (High Weightage)

  • Nernst Equation numericals — हर साल आते हैं
  • Conductance और conductivity calculations
  • Kohlrausch's Law applications
  • Electrolysis और Faraday's Laws

Chemical Kinetics

  • Rate law expression और order of reaction
  • Integrated rate equations (zero, first order)
  • Half-life calculations
  • Arrhenius equation numericals

Physical Chemistry Tips:

  1. हर chapter के 10 important formulas list करें
  2. Units conversion practice करें
  3. Daily 3-4 numericals solve करना habit बनाएं
  4. Previous year numericals repeat होते हैं — ज़रूर करें

Inorganic Chemistry Strategy (25 Marks)

Inorganic Chemistry को students boring कहते हैं, but यह सबसे scoring है। यहां सब कुछ memory-based है — table बनाकर याद करें।

p-Block Elements (Most Important)

  • Group 15, 16, 17, 18 properties table बनाएं
  • Oxides, halides, hydrides comparison
  • Important compounds: NH₃, HNO₃, H₂SO₄, Cl₂ preparation
  • Interhalogen compounds

d and f Block Elements

  • Electronic configurations table
  • Colour of ions chart
  • Magnetic properties calculation
  • Important compounds: KMnO₄, K₂Cr₂O₇

Coordination Compounds

  • IUPAC naming — practice से perfect होता है
  • Werner's theory
  • Valence Bond Theory (VBT)
  • Crystal Field Theory (CFT) — splitting diagrams
  • Isomerism types

Inorganic Tips:

  1. Comparison tables बनाएं — group-wise properties
  2. NCERT tables directly board में आते हैं
  3. Reaction equations balance करके daily 10 लिखें
  4. Naming practice daily 5-6 compounds

Organic Chemistry Strategy (26 Marks)

Organic Chemistry सबसे ज़्यादा marks carry करती है। Reactions और mechanisms समझ में आ गए तो scoring होगी।

Important Reaction Types

  • Named Reactions: Wurtz, Kolbe, Reimer-Tiemann, Cannizzaro, Aldol, Cross Aldol
  • Conversion Reactions: Alcohol → Aldehyde → Acid chain
  • Distinguishing Tests: Tollens, Fehling's, Lucas test, Iodoform test

Chapter-Wise Focus Areas

Haloalkanes & Haloarenes:

  • SN1 और SN2 mechanism (diagram सहित)
  • Elimination reactions (E1, E2)
  • Preparation और chemical reactions

Alcohols, Phenols, Ethers:

  • Preparation methods
  • Acidic strength comparison
  • Important reactions और distinguishing tests

Aldehydes, Ketones, Carboxylic Acids:

  • Nucleophilic addition mechanism
  • Named reactions — सब याद करें
  • Acidic strength order

Amines:

  • Classification और naming
  • Basicity comparison
  • Diazonium salt reactions

Biomolecules:

  • Carbohydrates, Proteins, Vitamins classification
  • Amino acids और enzymes basic concepts
  • Easy marks — NCERT table sufficient

Month-Wise Preparation Timeline

August-September: Foundation

  • Physical Chemistry numericals शुरू करें
  • Organic Chemistry reaction mechanisms समझें
  • NCERT reading complete करें

October-November: Deep Practice

  • Inorganic tables बनाकर revise करें
  • Organic named reactions daily 5 लिखें
  • Physical numericals previous year से करें

December-January: Integration

  • Mixed practice — सभी sections combined
  • Sample papers solve करें
  • Weak areas extra practice

February: Rapid Revision

  • Formula sheet और reaction chart daily revise
  • Full mock tests weekly
  • NCERT back questions एक बार और करें

Exam Day Tips

  1. Physical Chemistry से start करें — numericals confidence boost देते हैं
  2. Organic Chemistry reactions neatly लिखें — equation balance करना न भूलें
  3. Inorganic में table format use करें — examiner को easy लगता है
  4. Diagrams clear बनाएं — Crystal Field splitting, mechanism arrows

Padhaao पर Chemistry Practice

Padhaao पर Class 12 Chemistry के सभी chapters उपलब्ध हैं। Lecture mode से concepts clear करें, फिर Quiz mode में MCQs attempt करें। Organic reactions और Inorganic properties को Flashcards से revise करना बहुत effective है।

Chemistry में 60+ marks लाना definitely possible है — बस तीनों sections को equal time दें और NCERT को bible मानें।

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