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Page 3 of 9. 422 published articles from ABC Chemistry Blog on 4ab.in — one place for every post.
GurugramClass 11 and 12 Chemistry Coaching for Gurugram Students (Live Online)Class 11 and 12 Chemistry coaching for Gurugram students, taught in live online classes by ABC Chemistry. Call +91 92121 42427.27 Aug 2026 · 7 min read
Class 11Class 11 Chemistry Home Tuition in Delhi and NoidaClass 11 Chemistry home tuition across Delhi and Noida — why Class 11 is the year that decides Class 12, and what one-to-one actually fixes. Call +91 9212127 Aug 2026 · 4 min read
Chemical Science ExamsCSIR-NET Chemical Science: How to Start PreparationA realistic starting plan for CSIR-NET Chemical Science — how Part B and C differ, what to study first, and the mistakes that cost the first attempt.27 Aug 2026 · 5 min read
Class 11–12 ChemistryHow to Choose a Chemistry Tutor for Class 11 and 12What to ask before hiring a Class 11 or 12 Chemistry tutor — diagnostics, the three-branch problem, continuity, and the questions that reveal teaching27 Aug 2026 · 5 min read
Class 11Hydrocarbons (Class 11): Alkanes, Alkenes and Alkynes in One FrameworkClass 11 hydrocarbons — why alkanes substitute while alkenes add, Markovnikov and the peroxide effect, and the tests that separate the three families.27 Aug 2026 · 4 min read
Class 11–12 MathsIntegration (Class 12 Maths): Choosing the Right Method FirstClass 12 integration — how to recognise which method a problem wants, ILATE for by parts, partial fractions, and the definite-integral properties worth27 Aug 2026 · 4 min read
Class 11–12 Chemistryp-Block Elements (Class 12): Groups 15 and 16 Without the MemorisingGroup 15 and 16 for Class 12 — periodic trends that explain the exceptions, key compounds, and the anomalous behaviour questions boards ask every year.27 Aug 2026 · 4 min read
Class 11Redox Reactions (Class 11): Oxidation Numbers and Balancing That WorksClass 11 redox — assigning oxidation numbers without guessing, and balancing in acidic and basic medium by the ion-electron method, step by step.27 Aug 2026 · 4 min read
Class 11Sequences and Series (Class 11): AP, GP and the Sums Worth KnowingClass 11 sequences and series — AP and GP formulas used correctly, the AM–GM inequality, special sums, and the errors that cost marks in board papers.27 Aug 2026 · 4 min read
Class 11–12 ChemistrySolid State (Class 12): Unit Cells, Packing and the Density NumericalClass 12 Solid State made simple — unit cell types, atoms per cell, packing efficiency and the density formula worked step by step, with the errors that cost27 Aug 2026 · 4 min read
Class 11–12 ChemistryBiomolecules (Class 12): Carbohydrates, Proteins and Nucleic Acids Without the CrammingClass 12 Biomolecules made simple — classification of carbohydrates, peptide bonds and protein structure, DNA vs RNA, vitamins and enzymes, with exam-focused28 Aug 2026 · 7 min read
Class 11–12 ChemistryClass 11 vs Class 12 Chemistry Tuition: Why the Two Years Need Different TeachingWhy Class 11 and Class 12 chemistry tuition need different approaches — what to prioritise in each year, and how to judge whether your tutor is adapting.28 Aug 2026 · 7 min read
Class 11–12 ChemistryClass 12 Chemistry: How to Write Answers That Actually Score in the Board ExamAnswer writing technique for the Class 12 chemistry board exam — matching answer length to marks, stating reasons, reaction conditions, units, and time28 Aug 2026 · 7 min read
Chemical Science ExamsCSIR-NET Part A: Turning General Aptitude Into Your Most Reliable MarksHow to prepare CSIR-NET Part A general aptitude — the question types that repeat, a daily practice routine, and why neglecting it costs candidates their28 Aug 2026 · 7 min read
Chemical Science ExamsCUET-PG Chemistry: What the Paper Asks and How to Prepare for ItHow to prepare for CUET-PG Chemistry — why breadth beats depth, how it differs from IIT-JAM and CSIR-NET, and a practical preparation plan for BSc graduates.28 Aug 2026 · 7 min read
Class 11–12 MathsDifferential Equations (Class 12 Maths): Types, Methods and Board-Style Solved QuestionsClass 12 differential equations explained — order and degree, variable separable, homogeneous and linear forms, integrating factor, and solved board-style28 Aug 2026 · 6 min read
Class 11Equilibrium (Class 11): Le Chatelier's Principle and Kp–Kc Numericals Made SimpleClass 11 chemical equilibrium explained simply — writing Kc and Kp, the ICE table method, Le Chatelier questions and the mistakes that cost marks.28 Aug 2026 · 6 min read
Chemical Science ExamsGATE Chemistry (CY): A Six-Month Study Plan for Final-Year and Working AspirantsA realistic six-month GATE Chemistry (CY) study plan — month-by-month sequencing, when to start mock tests, and how to prepare alongside a job or final year.28 Aug 2026 · 7 min read
Chemical Science ExamsIIT-JAM Chemistry: How to Study Physical Chemistry Without Drowning in FormulasA working method for IIT-JAM physical chemistry — how to stop memorising formulas, which core relationships actually repeat, and how to build problem-solving28 Aug 2026 · 7 min read
Class 11–12 ChemistryOnline Chemistry Tuition for Class 11 and 12: How It Actually Works, and When It Does NotWhat good online chemistry tuition looks like for Class 11 and 12 — what to check before enrolling, which students it suits, and the warning signs of a28 Aug 2026 · 7 min read
Class 11Periodic Classification (Class 11): Trends You Can Derive Instead of MemorisingClass 11 periodic classification explained through effective nuclear charge — how to derive every trend, and why the exceptions are where the marks are.28 Aug 2026 · 7 min read
Class 11–12 MathsRelations and Functions (Class 12 Maths): Types, Composition and Inverse ExplainedClass 12 Relations and Functions explained — reflexive, symmetric and transitive relations, equivalence classes, one-one and onto functions, composition and28 Aug 2026 · 7 min read
Chemical Science ExamsHaemoglobin and Myoglobin: Coordination Chemistry Doing a JobBioinorganic chemistry of haemoglobin and myoglobin: the haem group, oxygen binding curves, cooperativity, the spin-state change, the Bohr effect and carbon29 Aug 2026 · 5 min read
Chemical Science ExamsCSIR-NET Chemical Sciences Part C: How Physical Chemistry Is Really AskedHow CSIR-NET Chemical Sciences Part C asks physical chemistry: question style, cross-topic reasoning, negative marking strategy, and how it differs from Part29 Aug 2026 · 5 min read
Chemical Science ExamsMolecular Symmetry and Point Groups: The Topic That Pays for ItselfMolecular symmetry for IIT-JAM and CSIR-NET: symmetry elements and operations, point group assignment flowchart, character tables, and predicting polarity,29 Aug 2026 · 5 min read
Class 11–12 Chemistryp-Block Elements (Class 12): Groups 15 to 18 as Trends, Not ListsClass 12 p-Block taught through periodic trends - inert pair effect, oxoacid strength, and the anomalies that are actually examined. Call +91 92121 42427.29 Aug 2026 · 4 min read
Chemical Science ExamsParticle in a Box: The Derivation IIT-JAM and CSIR-NET Actually AskParticle in a box derivation for IIT-JAM, CSIR-NET and GATE Chemistry: boundary conditions, normalisation, energy levels, degeneracy in 3D, and the errors29 Aug 2026 · 6 min read
Class 11–12 ChemistrySolid State (Class 12): Unit Cells, Packing and Density NumericalsClass 12 Solid State - unit cell types, atoms per cell, packing efficiency and the density formula, with the method for numericals. Call +91 92121 42427.29 Aug 2026 · 4 min read
Chemical Science ExamsSteady-State Approximation: Three Solved Kinetics ProblemsSteady-state approximation explained with three fully worked kinetics problems, plus when the approximation is valid and how it differs from pre-equilibrium.29 Aug 2026 · 5 min read
Chemical Science ExamsCrystal Field Theory: Splitting, CFSE and the Spectrochemical SeriesCrystal field theory for IIT-JAM, CSIR-NET and GATE: octahedral and tetrahedral splitting, CFSE calculation, high-spin vs low-spin, spectrochemical series30 Aug 2026 · 5 min read
Chemical Science ExamsThe CSIR-NET Chemical Sciences Syllabus, Decoded Unit by UnitHow to read the CSIR-NET Chemical Sciences syllabus and turn it into a study plan: what the units actually cover, how to sequence them, and where candidates30 Aug 2026 · 5 min read
Chemical Science ExamsThe 18-Electron Rule and Hapticity: Counting Without Errors18-electron rule and hapticity explained: neutral vs ionic counting methods, hapticity notation, worked examples, and the classes of complex that30 Aug 2026 · 4 min read
Class 11Redox Reactions (Class 11): Oxidation Numbers and Balancing Made SimpleClass 11 redox reactions: rules for assigning oxidation numbers, the oxidation-number method, the ion-electron method in acidic and basic media, and worked30 Aug 2026 · 5 min read
Chemical Science ExamsCIP Rules and R/S Assignment Without MistakesCIP priority rules and R/S assignment explained with the three errors that cost marks: branch exploration order, duplicated atoms for double bonds, and30 Aug 2026 · 5 min read
Chemical Science ExamsIIT-JAM Chemistry: A Realistic Month-by-Month Preparation PlanA realistic month-by-month IIT-JAM Chemistry preparation plan: what to build first, how to run the three divisions in parallel, and how to fold revision in31 Aug 2026 · 5 min read
Chemical Science ExamsMaxwell Relations: Where They Come From and How to Use ThemMaxwell relations derived from exact differentials: the four thermodynamic potentials, how to reconstruct each relation, and how they turn unmeasurable31 Aug 2026 · 4 min read
Chemical Science ExamsStructure Determination by NMR: A Method That Works Every TimeHow to solve NMR structure determination problems: degrees of unsaturation, integration, chemical shift, multiplicity and the n+1 rule, with a repeatable31 Aug 2026 · 5 min read
Chemical Science ExamsPericyclic Reactions: Woodward–Hoffmann Rules Made UsableWoodward-Hoffmann rules explained for IIT-JAM and CSIR-NET: electrocyclic, cycloaddition and sigmatropic reactions, with the electron-count table and31 Aug 2026 · 5 min read
Class 11States of Matter (Class 11): Gas Laws and Kinetic Molecular TheoryClass 11 states of matter: Boyle, Charles and Gay-Lussac laws, the ideal gas equation, kinetic molecular theory, real gas deviations and the van der Waals31 Aug 2026 · 5 min read
Chemical Science ExamsAfter an MSc in Chemistry: PhD Routes, JRF and What Each Actually Leads ToCareer routes after an MSc in Chemistry: what CSIR-NET JRF and lectureship mean, how GATE fits, PhD admission routes, and how to choose between research,01 Sep 2026 · 6 min read
Chemical Science ExamsAromaticity and Hückel's Rule: Testing Any Ring in Four StepsAromaticity and Huckel 4n+2 rule: the four conditions, how to count pi electrons including lone pairs, antiaromatic vs non-aromatic, and worked heterocyclic01 Sep 2026 · 5 min read
Chemical Science ExamsDebye–Hückel Theory: Why Concentration Is Not EnoughDebye-Huckel theory explained: ionic atmosphere, activity vs concentration, ionic strength, the limiting law and its validity range, and why strong01 Sep 2026 · 5 min read
Chemical Science ExamsMathematics for Chemists: The Calculus You Actually NeedThe mathematics chemistry students actually need for IIT-JAM, CSIR-NET and GATE: partial derivatives, standard integrals, first-order differential equations01 Sep 2026 · 5 min read
Chemical Science ExamsSolid State for Entrance Exams: Close Packing, Voids and Band TheorySolid state for IIT-JAM, CSIR-NET and GATE: close packing, unit cell calculations, tetrahedral and octahedral voids, radius ratio rules, defects and band01 Sep 2026 · 5 min read
Chemical Science ExamsNamed Rearrangements: Four Reactions, One PatternBeckmann, Hofmann, Curtius and Baeyer-Villiger rearrangements explained through their shared mechanism: migration to an electron-deficient atom, with02 Sep 2026 · 5 min read
Class 11Organic Chemistry Basics (Class 11): IUPAC Naming and IsomerismClass 11 organic chemistry basics: IUPAC nomenclature step by step, functional group priority, structural and stereo isomerism, and inductive, resonance and02 Sep 2026 · 5 min read
Chemical Science ExamsSN1 versus SN2: The Complete ComparisonSN1 vs SN2 compared: kinetics, stereochemistry, substrate, nucleophile, leaving group and solvent effects, with a decision order for predicting the pathway.02 Sep 2026 · 4 min read
Class 11–12 ChemistrySurface Chemistry (Class 12): Adsorption, Colloids and CatalysisClass 12 surface chemistry: adsorption vs absorption, physisorption and chemisorption, Freundlich isotherm, colloid classification, Tyndall effect,02 Sep 2026 · 6 min read