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.

Open ABC Chemistry Blog →
Asymmetric Synthesis Study Material — IIT-JAM, CSIR-NET, GATE

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 2026
Group Theory Study Material — IIT-JAM, CSIR-NET, GATE

Ace 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 2026
Kinetic Theory of Gases Study Material — IIT-JAM, CSIR-NET, GATE

Preparing 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 2026
Mass Spectrometry Study Material — IIT-JAM, CSIR-NET, GATE

Are 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 2026
Organometallic Compounds Study Material — IIT-JAM, CSIR-NET, GATE

Organometallic 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 2026
Surds and Logarithms (General Aptitude) Study Material — IIT-JAM, CSIR-NET, GATE

The 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 2026
E1 and E2 Elimination: Saytzeff, Hofmann and Which Alkene Forms

E1 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 2026
Electrochemical Cells: Notation, Sign Conventions and the Nernst Equation

Electrochemical 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 2026
What to Expect in the First Home Tuition Session: Class 11 Chemistry in Delhi

What happens in the first home tuition session for Class 11 chemistry in Delhi, before a regular weekly schedule begins.

ABC Chemistry Blog · 02 Oct 2026
Group Theory for Chemistry: Symmetry Elements and Point Groups Without the Mystery

A 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 2026
Group Tuition or One-on-One: Choosing a Format for Class 9-10 Chemistry and Maths

Comparing 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 2026
Haloalkanes and Haloarenes (Class 12): SN1 versus SN2 Explained Simply

SN1 vs SN2 for Class 12: rate laws, carbocation vs concerted mechanism, stereochemistry, reactivity order, and why haloarenes resist nucleophilic

ABC Chemistry Blog · 02 Oct 2026
The HSAB Principle: Predicting Which Combinations Are Stable

HSAB principle explained: classification of hard and soft acids and bases, borderline cases, applications to stability, solubility, mineral occurrence and

ABC Chemistry Blog · 02 Oct 2026
The Harmonic Oscillator and Rigid Rotor as Quantum Models

Quantum 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 2026
How to Choose a Chemistry Tutor for Class 11 and 12

What 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 2026
How 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 2026
Hydrocarbons (Class 11): Alkanes, Alkenes and Alkynes in One Framework

Class 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 2026
Ideal and Non-Ideal Solutions: Raoult, Henry and Azeotropes

Ideal and non-ideal solutions: Raoult law, Henry law, positive and negative deviations, azeotropes, and the thermodynamics of mixing explained.

ABC Chemistry Blog · 02 Oct 2026
IIT-JAM 2027: Application Window and Exam Date for Chemistry Aspirants

IIT-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 2026
IIT JAM Chemistry Classes Online 2026–27

IIT 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 2026
Planning the Five Months Before IIT-JAM Chemistry

A 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 2026
IIT-JAM Chemistry: A Realistic Month-by-Month Preparation Plan

A 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 2026
IIT-JAM Chemistry: How to Study Physical Chemistry Without Drowning in Formulas

A 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 2026
IIT-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 2026
The Jahn–Teller Effect: Why Some Complexes Distort

Jahn-Teller effect explained: which d configurations distort, strong vs weak distortion, elongation vs compression, and the spectroscopic evidence.

ABC Chemistry Blog · 02 Oct 2026
Last-30-Days Revision Plan for Class 12 Chemistry Boards

A realistic last-month revision plan for Class 12 Chemistry boards — rotate Physical, Organic and Inorganic and solve past papers.

ABC Chemistry Blog · 02 Oct 2026
Magnetic Properties: When the Spin-Only Formula Works and When It Fails

Magnetic 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 2026
Mass Spectrometry: Reading Fragmentation Patterns

Mass spectrometry interpretation: molecular ion, isotope patterns for chlorine and bromine, nitrogen rule, common fragment losses and McLafferty

ABC Chemistry Blog · 02 Oct 2026
Matrices & Determinants (Class 12 Maths): Key Rules + Solved Questions

Key matrix and determinant rules for Class 12 Maths plus a solved linear-equations example using the matrix method.

ABC Chemistry Blog · 02 Oct 2026
Metal Carbonyls: Synergic Bonding and What the Spectrum Reveals

Metal 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 2026
Michael Addition: Conjugate Addition and Where It Leads

Michael 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 2026
Michaelis–Menten Enzyme Kinetics: Derivation and Interpretation

Michaelis-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 2026
Named Rearrangements: Four Reactions, One Pattern

Beckmann, Hofmann, Curtius and Baeyer-Villiger rearrangements explained through their shared mechanism: migration to an electron-deficient atom, with

ABC Chemistry Blog · 02 Oct 2026
The Distribution Law and Why Extraction in Portions Works Better

Nernst 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 2026
NET-CSIR Chemistry Coaching in Delhi

Looking 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 2026
Structure Determination by NMR: A Method That Works Every Time

How 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 2026
Noble Gas Compounds: Why Xenon Reacts and Helium Does Not

Noble gas compounds: why xenon forms compounds, xenon fluoride structures by VSEPR, hydrolysis products, bonding models and clathrates.

ABC Chemistry Blog · 02 Oct 2026
One-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 2026
Online Maths Tuition for Class 12 CBSE

Join 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 2026
Online 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 2026
Organic Chemistry Basics (Class 11): IUPAC Naming and Isomerism

Class 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 2026
Infrared Spectroscopy: Reading a Spectrum for Functional Groups

Infrared spectroscopy for organic structure: the four regions, characteristic frequencies, band shape and intensity, and distinguishing carbonyl types.

ABC Chemistry Blog · 02 Oct 2026
Orgel and Tanabe–Sugano Diagrams: Interpreting d–d Spectra

Orgel 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 2026
Periodic Classification (Class 11): Trends You Can Derive Instead of Memorising

Class 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 2026
Periodic Trends From One Idea: Effective Nuclear Charge

Periodic trends explained through effective nuclear charge: atomic radius, ionisation energy, electron affinity, electronegativity, and the exceptions.

ABC Chemistry Blog · 02 Oct 2026
Photochemistry Basics: The Jablonski Diagram and Excited-State Pathways

Photochemistry 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 2026
Photochemistry: Quantum Yield and the Jablonski Diagram

Photochemistry basics: Grotthuss-Draper and Stark-Einstein laws, quantum yield, Jablonski diagram, fluorescence vs phosphorescence, and photosensitisation.

ABC Chemistry Blog · 02 Oct 2026
Operators, Commutators and Expectation Values

Quantum operators explained: eigenfunctions and eigenvalues, Hermitian operators, commutators and simultaneous observables, and expectation values.

ABC Chemistry Blog · 02 Oct 2026