4AB › Blog
ABC Chemistry Blog · Blog
Page 2 of 9. 419 published articles from ABC Chemistry Blog on 4ab.in — one place for every post.
Are you preparing for competitive exams like IIT JAM, CSIR NET, GATE, TIFR, or BARC? Do you want to master asymmetric synthesis, one of the most crucial
ABC Chemistry Blog · 02 Oct 2026Group Theory Study Material — IIT-JAM, CSIR-NET, GATEAce your exams with the ultimate **Group Theory** study package! Perfect for **IIT JAM, CSIR NET, GATE, TIFR, BARC**, and more. Get top-notch study material
ABC Chemistry Blog · 02 Oct 2026Kinetic Theory of Gases Study Material — IIT-JAM, CSIR-NET, GATEPreparing for **IIT JAM, CSIR NET, GATE, TIFR, or BARC**? Master **Kinetic Theory of Gases**, a key **Physical Chemistry** topic, with our expert-curated
ABC Chemistry Blog · 02 Oct 2026Mass Spectrometry Study Material — IIT-JAM, CSIR-NET, GATEAre you preparing for IIT JAM, CSIR NET, GATE, TIFR, or BARC and struggling with Mass Spectroscopy? Mastering this topic is essential for success in
ABC Chemistry Blog · 02 Oct 2026Organometallic Compounds Study Material — IIT-JAM, CSIR-NET, GATEOrganometallic Compounds Study Material — IIT-JAM, CSIR-NET, GATE: Ace your exams with the ultimate Read the full article by ABC
ABC Chemistry Blog · 02 Oct 2026Surds and Logarithms (General Aptitude) Study Material — IIT-JAM, CSIR-NET, GATEThe study material covers General Aptitude topics, specifically Surds and Logarithms, for exams such as IIT JAM, CSIR NET, GATE, BSc, MSc, and CUET in the
ABC Chemistry Blog · 02 Oct 2026E1 and E2 Elimination: Saytzeff, Hofmann and Which Alkene FormsE1 and E2 elimination mechanisms: anti-periplanar requirement, Saytzeff vs Hofmann orientation, bulky bases, and how to decide between substitution and
ABC Chemistry Blog · 02 Oct 2026Electrochemical Cells: Notation, Sign Conventions and the Nernst EquationElectrochemical cell notation and conventions: anode left cathode right, cell potential calculation, the Nernst equation, and the link to Gibbs energy and
ABC Chemistry Blog · 02 Oct 2026What to Expect in the First Home Tuition Session: Class 11 Chemistry in DelhiWhat happens in the first home tuition session for Class 11 chemistry in Delhi, before a regular weekly schedule begins.
ABC Chemistry Blog · 02 Oct 2026Group Theory for Chemistry: Symmetry Elements and Point Groups Without the MysteryA working method for assigning molecular point groups for CSIR-NET, IIT-JAM and GATE Chemistry — symmetry elements explained without rote memorisation.
ABC Chemistry Blog · 02 Oct 2026Group Tuition or One-on-One: Choosing a Format for Class 9-10 Chemistry and MathsComparing group tuition and one-on-one home tuition for Class 9-10 chemistry and maths, and how to decide which suits a specific student.
ABC Chemistry Blog · 02 Oct 2026Haloalkanes and Haloarenes (Class 12): SN1 versus SN2 Explained SimplySN1 vs SN2 for Class 12: rate laws, carbocation vs concerted mechanism, stereochemistry, reactivity order, and why haloarenes resist nucleophilic
ABC Chemistry Blog · 02 Oct 2026The HSAB Principle: Predicting Which Combinations Are StableHSAB principle explained: classification of hard and soft acids and bases, borderline cases, applications to stability, solubility, mineral occurrence and
ABC Chemistry Blog · 02 Oct 2026The Harmonic Oscillator and Rigid Rotor as Quantum ModelsQuantum harmonic oscillator and rigid rotor: energy levels, zero point energy, degeneracy, selection rules and how they underpin vibrational and rotational sp
ABC Chemistry Blog · 02 Oct 2026How 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 teaching
ABC Chemistry Blog · 02 Oct 2026How to Choose a Chemistry Home Tutor in Dwarka (Class 11 & 12)A parent checklist for choosing a Chemistry home tutor in Dwarka for Class 11 and 12 — what to look for, fee factors and questions to ask.
ABC Chemistry Blog · 02 Oct 2026Hydrocarbons (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.
ABC Chemistry Blog · 02 Oct 2026Ideal and Non-Ideal Solutions: Raoult, Henry and AzeotropesIdeal and non-ideal solutions: Raoult law, Henry law, positive and negative deviations, azeotropes, and the thermodynamics of mixing explained.
ABC Chemistry Blog · 02 Oct 2026IIT-JAM 2027: Application Window and Exam Date for Chemistry AspirantsIIT-JAM 2027 application window (11 Sept-19 Oct 2026), exam date (14 Feb 2027) and result date confirmed by IIT Kharagpur. What Chemistry aspirants should do n
ABC Chemistry Blog · 02 Oct 2026IIT JAM Chemistry Classes Online 2026–27IIT JAM Chemistry online classes for the 2026–27 session: JAM 2027 is on 14 Feb 2027. Benefits, features and preparation strategy, by ABC Chemistry.
ABC Chemistry Blog · 02 Oct 2026Planning the Five Months Before IIT-JAM ChemistryA five-month IIT-JAM Chemistry study plan ahead of the 14 February 2027 exam — how to split first-pass coverage, weak-topic repair and timed practice.
ABC Chemistry Blog · 02 Oct 2026IIT-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 in
ABC Chemistry Blog · 02 Oct 2026IIT-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-solving
ABC Chemistry Blog · 02 Oct 2026IIT-JAM vs CSIR-NET vs GATE Chemistry: Which Exam Should You Target After BSc?Is CSIR-NET harder than IIT-JAM or GATE? Compare what each chemistry exam tests, where it leads and the right order to take them after BSc.
ABC Chemistry Blog · 02 Oct 2026The Jahn–Teller Effect: Why Some Complexes DistortJahn-Teller effect explained: which d configurations distort, strong vs weak distortion, elongation vs compression, and the spectroscopic evidence.
ABC Chemistry Blog · 02 Oct 2026Last-30-Days Revision Plan for Class 12 Chemistry BoardsA realistic last-month revision plan for Class 12 Chemistry boards — rotate Physical, Organic and Inorganic and solve past papers.
ABC Chemistry Blog · 02 Oct 2026Magnetic Properties: When the Spin-Only Formula Works and When It FailsMagnetic moments in coordination chemistry: spin-only formula, orbital contribution and quenching, when it fails, and using magnetism to determine spin state.
ABC Chemistry Blog · 02 Oct 2026Mass Spectrometry: Reading Fragmentation PatternsMass spectrometry interpretation: molecular ion, isotope patterns for chlorine and bromine, nitrogen rule, common fragment losses and McLafferty
ABC Chemistry Blog · 02 Oct 2026Matrices & Determinants (Class 12 Maths): Key Rules + Solved QuestionsKey matrix and determinant rules for Class 12 Maths plus a solved linear-equations example using the matrix method.
ABC Chemistry Blog · 02 Oct 2026Metal Carbonyls: Synergic Bonding and What the Spectrum RevealsMetal carbonyls: synergic sigma donation and pi back-bonding, infrared stretching frequency as a probe, bridging vs terminal CO, synthesis and the
ABC Chemistry Blog · 02 Oct 2026Michael Addition: Conjugate Addition and Where It LeadsMichael addition explained: conjugate vs direct addition, why soft nucleophiles add 1,4, the 1,5-dicarbonyl product and Robinson annulation.
ABC Chemistry Blog · 02 Oct 2026Michaelis–Menten Enzyme Kinetics: Derivation and InterpretationMichaelis-Menten equation derived by the steady-state approximation, with the meaning of KM and Vmax, Lineweaver-Burk plots and inhibition types compared.
ABC Chemistry Blog · 02 Oct 2026Named Rearrangements: Four Reactions, One PatternBeckmann, Hofmann, Curtius and Baeyer-Villiger rearrangements explained through their shared mechanism: migration to an electron-deficient atom, with
ABC Chemistry Blog · 02 Oct 2026The Distribution Law and Why Extraction in Portions Works BetterNernst distribution law explained with the multiple extraction formula, proof that repeated small extractions are more efficient, and applications to solvent
ABC Chemistry Blog · 02 Oct 2026NET-CSIR Chemistry Coaching in DelhiLooking for the best coaching for CSIR NET Chemical Science? ABC Chemistry offers expert faculty, complete syllabus coverage & regular tests for JRF & LS.
ABC Chemistry Blog · 02 Oct 2026Structure 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 repeatable
ABC Chemistry Blog · 02 Oct 2026Noble Gas Compounds: Why Xenon Reacts and Helium Does NotNoble gas compounds: why xenon forms compounds, xenon fluoride structures by VSEPR, hydrolysis products, bonding models and clathrates.
ABC Chemistry Blog · 02 Oct 2026One-to-One vs Coaching Class for Class 12 Chemistry: Which Gives Better Results?One-to-one tuition or a coaching class for Class 12 Chemistry? Compare attention, pace, cost and motivation to choose the right fit.
ABC Chemistry Blog · 02 Oct 2026Online Maths Tuition for Class 12 CBSEJoin Online Maths Tuition for Class 12 CBSE with expert teachers. Live classes, doubt solving, and board exam preparation. Call +91 92121 42427.
ABC Chemistry Blog · 02 Oct 2026Online vs Home vs Group Tuition for Class 12 Chemistry: Which Should You Choose?Confused between home, online and group tuition for Class 12 Chemistry? Compare attention, cost, flexibility and who each suits — with a 1-minute decision
ABC Chemistry Blog · 02 Oct 2026Organic 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 and
ABC Chemistry Blog · 02 Oct 2026Infrared Spectroscopy: Reading a Spectrum for Functional GroupsInfrared spectroscopy for organic structure: the four regions, characteristic frequencies, band shape and intensity, and distinguishing carbonyl types.
ABC Chemistry Blog · 02 Oct 2026Orgel and Tanabe–Sugano Diagrams: Interpreting d–d SpectraOrgel and Tanabe-Sugano diagrams explained: term splitting, selection rules for d-d transitions, why some bands are weak, and how to extract the ligand field
ABC Chemistry Blog · 02 Oct 2026Periodic 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.
ABC Chemistry Blog · 02 Oct 2026Periodic Trends From One Idea: Effective Nuclear ChargePeriodic trends explained through effective nuclear charge: atomic radius, ionisation energy, electron affinity, electronegativity, and the exceptions.
ABC Chemistry Blog · 02 Oct 2026Photochemistry Basics: The Jablonski Diagram and Excited-State PathwaysPhotochemistry for CSIR-NET and GATE Chemistry — the Jablonski diagram, fluorescence vs phosphorescence, and how to reason through excited-state questions.
ABC Chemistry Blog · 02 Oct 2026Photochemistry: Quantum Yield and the Jablonski DiagramPhotochemistry basics: Grotthuss-Draper and Stark-Einstein laws, quantum yield, Jablonski diagram, fluorescence vs phosphorescence, and photosensitisation.
ABC Chemistry Blog · 02 Oct 2026Operators, Commutators and Expectation ValuesQuantum operators explained: eigenfunctions and eigenvalues, Hermitian operators, commutators and simultaneous observables, and expectation values.
ABC Chemistry Blog · 02 Oct 2026