ABC Chemistry Blog · Blog

Class 11 hydrogen: position in the periodic table, isotopes, ionic covalent and metallic hydrides, hard and soft water, heavy water and hydrogen peroxide.

IIT JAM 2027 registration opened 11 September 2026 and closes 19 October. Exam on 14 February 2027, result 18 March, organised by IIT Kharagpur.

IIT JAM 2027 (IIT Kharagpur): exam 14 Feb 2027, apply 11 Sep – 19 Oct 2026, result 18 Mar 2027. Plus the JAM Chemistry syllabus and pattern.

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Inductive resonance and hyperconjugation compared: how each works, relative strength, and how to apply them to acidity basicity and carbocation stability.

Class 12 integration — how to recognise which method a problem wants, ILATE for by parts, partial fractions, and the definite-integral properties worth

Interhalogen compounds: types, shapes by VSEPR, why fluorine gives the highest stoichiometry, reactivity and hydrolysis, plus pseudohalogens and pseudohalides

Inverse trigonometric functions for Class 12 CBSE: principal value branches, why sin inverse of sin x is not always x, and the conditions attached to the

Ionic conductance explained: molar conductivity, Kohlrausch law of independent ion migration, strong vs weak electrolyte behaviour, transport numbers and

Ionic equilibrium for Class 11: pH and pOH, Kw, the Henderson buffer equation, solubility product with stoichiometry, and the common ion effect.

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JEE Main 2027 Session 1 exam dates (22-30 January 2027) released by NTA. How Class 12 Delhi, Noida and Gurgaon students should plan chemistry revision alongsi

A Delhi-NCR parent's guide to balancing JEE Main 2027 preparation with Class 12 chemistry boards, now that Session 1 dates are confirmed.

Kinetic isotope effects explained for CSIR-NET, GATE and IIT-JAM: why kH/kD changes with mechanism, and primary versus secondary KIEs.

Why lanthanides are hard to separate in pure state, explained via lanthanide contraction: cause, consequences, separation, magnetic and spectral properties.

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Nitrogen vs phosphorus chemistry: multiple bonding, catenation, octet expansion, oxides and oxoacids, and why the elemental forms differ so much.

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The mathematics chemistry students actually need for IIT-JAM, CSIR-NET and GATE: partial derivatives, standard integrals, first-order differential equations

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Maxwell relations derived from exact differentials: the four thermodynamic potentials, how to reconstruct each relation, and how they turn unmeasurable

Class 12 metallurgy: ore concentration methods, calcination vs roasting, Ellingham diagram, reduction methods, and refining techniques explained.

Molecular orbital filling order for diatomic molecules with and without s-p mixing: MO diagrams, bond order calculation and predicting magnetic behaviour.

Molecular symmetry for IIT-JAM and CSIR-NET: symmetry elements and operations, point group assignment flowchart, character tables, and predicting polarity,

How to balance NCERT with reference books for Class 12 Chemistry so you cover boards well without over-buying resources.

Neighbouring group participation explained: anchimeric assistance, double inversion giving retention, rate enhancement, and the groups that participate.

Learn to solve Class 12 Chemistry electrochemistry numericals with the Nernst equation. Two fully worked board-style examples, the 0.0591/n formula, and

Nitrogen fixation: why the N-N triple bond is hard to break, the industrial ammonia synthesis compromise, catalysis, and biological nitrogenase.

Non-aqueous solvents in inorganic chemistry: solvent system acid-base definitions, liquid ammonia, solvated electrons, levelling effect and differentiating so

Nuclear chemistry: decay kinetics and half-life, band of stability, alpha beta and gamma decay, binding energy per nucleon, fission fusion and radiochemical

Online chemistry tuition for Class 11-12 Delhi students preparing for board exams — what makes it work for board-style answer writing specifically.

What 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 a

What actually happens in a well-run online chemistry tuition session for Class 9-12 students across Delhi, Noida and Gurgaon — and what to check before enroll

How live online tuition helps Gurugram students save travel time and access specialist Class 11 and 12 Chemistry and Maths teaching.

Comparing acidity and basicity in organic chemistry: conjugate base stability, resonance and inductive effects, hybridisation, and amine basicity anomalies.

Class 11 purification of organic compounds: crystallisation, distillation types, chromatography, Lassaigne test for elements, and quantitative estimation

18-electron rule and hapticity explained: neutral vs ionic counting methods, hapticity notation, worked examples, and the classes of complex that

Osmotic pressure explained: the van’t Hoff equation, why it is the most sensitive colligative property, molar mass determination, and the van’t Hoff factor.

Class 11 p-block groups 13 and 14: periodic trends, inert pair effect, anomalous behaviour of boron and carbon, catenation and important compounds.

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Group 15 and 16 for Class 12 — periodic trends that explain the exceptions, key compounds, and the anomalous behaviour questions boards ask every year.