Chemistry

Acids Bases And Salts — Concepts, Reactions & Solved Examples

Complete guide to acids bases and salts for Class 7, Class 10. NCERT solved examples and practice questions. Built for CBSE prep. Free guide on doubts.ai.

Acids, Bases and Salts — Indicators & Neutralisation for Class 7

Natural indicators (litmus, turmeric), acidic and basic substances, neutralisation reaction, everyday examples. NCERT Class 7 Science. Built for CBSE prep.

Acids Bases — Concepts, Formulas & Examples

Acids, bases, pH, neutralisation and indicators — CBSE Class 10 and 11. Acids and bases are two of the most fundamental categories in chemistry.

Alcohols Phenols Ethers — Concepts, Reactions & Solved Examples

Complete guide to alcohols phenols ethers for Class 12. Solved examples, exam tips, PYQs. Alcohols, phenols, and ethers all carry an oxygen atom, but their…

Alcohols — Concepts, Formulas & Examples

Structure, properties, preparation and reactions of alcohols. Alcohols are organic compounds with an OH group attached to a carbon atom.

Aldehydes Ketones Carboxylic Acids — Concepts, Reactions & Solved Examples

Complete guide to aldehydes ketones carboxylic acids for Class 12. Solved examples, exam tips, PYQs. Built for JEE & NEET & CBSE prep. Free guide on doubts.ai.

Allotropy — Concepts, Formulas & Examples

Allotropes of carbon, sulphur and phosphorus — structure and properties. Allotropy is the existence of an element in two or more forms with different physical…

Amines — Concepts, Reactions & Solved Examples

Complete guide to amines for Class 12. Solved examples, exam tips, PYQs. Amines are organic compounds derived from ammonia (NH₃) by replacing one, two, or…

Aromatic Compounds — Benzene, Resonance, and Substitution

Master aromatic compounds with conceptual clarity, solved examples, and exam strategies. The word 'aromatic' originally referred to sweet-smelling compounds…

Atomic Models — Concepts, Formulas & Examples

Development of atomic models from Dalton to quantum mechanical. Atomic models trace the evolution of our understanding of the atom. Free guide on doubts.ai.

Atomic Structure — Bohr's Model, Quantum Numbers for Class 11

Rutherford and Bohr models, quantum numbers, orbitals, electronic configuration, Aufbau principle, Hund's rule, Pauli exclusion. NCERT Class 11 Chapter 2.

Batteries — Concepts, Formulas & Examples

Primary and secondary cells, electrochemical basis and common types. Batteries are devices that convert chemical energy to electrical energy through redox…

Biomolecules — Carbohydrates, Proteins, Nucleic Acids, Vitamins

Biomolecules — Carbohydrates, Proteins, Nucleic Acids, Vitamins Biomolecules are the organic compounds that make life possible — carbohydrates for energy…

Bonding Types — Concepts, Formulas & Examples

Detailed comparison of ionic, covalent, coordinate and metallic bonds. Different bonding types give different properties to materials. Free guide on doubts.ai.

Carbohydrates, Proteins, and Fats — The Chemistry of Food

Master carbohydrates, proteins, and fats with conceptual clarity, solved examples, and exam strategies. Biomolecules are the chemicals of life.

Carbon — Concepts, Formulas & Examples

Carbon and its compounds — bonding, catenation and importance in life. Carbon is the central element of organic chemistry and life itself.

Bonding — Concepts, Formulas & Examples

Chemical bonding — ionic, covalent, metallic and hydrogen bonds. Bonding is how atoms hold together to form molecules, crystals and metals.

Catalysis — Concepts, Formulas & Examples

Catalysts, types, examples and industrial importance. A catalyst increases the rate of a reaction without being consumed. Built for Class 9-12 prep.

Carbonyl — Concepts, Formulas & Examples

Aldehydes and ketones — structure, preparation, reactions and tests. Aldehydes and ketones both contain the carbonyl group (C=O). Built for Class 9-12 prep.

Catenation — Concepts, Formulas & Examples

The ability of carbon to form long chains — why carbon is unique. Catenation is the self-linking of atoms of an element to form chains, rings and branched…

Changes Around Us — for Class 6

Complete guide to changes around us for Class 6. NCERT solved examples and practice questions. Look around for thirty seconds. Built for CBSE prep.

Changes — Concepts, Formulas & Examples

Physical and chemical changes — differences and examples. Physical and chemical changes are the most basic distinction in chemistry. Built for Class 9-12 prep.

Molecular Geometry and VSEPR Theory

Master molecular geometry and vsepr theory with conceptual clarity, solved examples, and exam strategies. Built for JEE & NEET & CBSE prep.

Chemical Bonding — Ionic, Covalent & Metallic Bonds Explained

Chemical bonding types, VSEPR theory, hybridization, MOT. CBSE, JEE, NEET with solved examples. Why do atoms bond at all? Built for JEE & NEET & CBSE prep.

Chemical Kinetics — Rate Law, Order, Arrhenius Equation

Chemical Kinetics — Rate Law, Order, Arrhenius Equation Chemical kinetics answers one question: how fast does a reaction proceed? Built for Class 12 prep.

Chemical Effects Of Electric Current — for Class 8

Complete guide to chemical effects of electric current for Class 8. NCERT solved examples and practice questions. Built for CBSE prep. Free guide on doubts.ai.

Chemical Thermodynamics — Why Reactions Happen

Master chemical thermodynamics with conceptual clarity, solved examples, and exam strategies. Why does iron rust but gold doesn't? Free guide on doubts.ai.

Chemistry of Soaps and Detergents

Master chemistry of soaps and detergents with conceptual clarity, solved examples, and exam strategies. Built for JEE & NEET & CBSE prep.

Chemistry in Everyday Life — Drugs, Soaps, Food Additives

Chemistry in Everyday Life — Drugs, Soaps, Food Additives Every tablet you pop for a headache, every bar of soap you use, every preservative in your packaged…

Chemistry of Medicines — How Drugs Work

Master chemistry of medicines with conceptual clarity, solved examples, and exam strategies. Every medicine you've ever taken — paracetamol, aspirin…

Coal and Petroleum — Class 8

Coal and Petroleum — Class 8

Coal And Petroleum — for Class 8

Complete guide to coal and petroleum for Class 8. NCERT solved examples and practice questions. Coal and petroleum are fossil fuels — and that word 'fossil'…

Colligative Properties — Boiling Point, Freezing Point, Osmosis

Master colligative properties with conceptual clarity, solved examples, and exam strategies. Dissolve salt in water and it boils at a higher temperature.

Colloids — Concepts, Formulas & Examples

Colloidal solutions, types, properties and Tyndall effect. A colloid is a mixture in which one substance is dispersed in another at particle size between 1 and…

Combustion And Flame — for Class 8

Complete guide to combustion and flame for Class 8. NCERT solved examples and practice questions. Combustion is a chemical reaction between a substance and…

Coordination Compounds — Concepts, Reactions & Solved Examples

Complete guide to coordination compounds for Class 12. Solved examples, exam tips, PYQs. Take a copper sulphate solution. Now add excess ammonia.

Corrosion — Concepts, Formulas & Examples

Rusting of iron, prevention methods and electrochemical basis. Corrosion is the gradual degradation of metals by reaction with the environment.

Crystal Field Theory — Why Transition Metal Compounds Are Colourful

Master crystal field theory with conceptual clarity, solved examples, and exam strategies. When white light hits a solution of copper sulphate, the solution…

D And F Block Elements — Concepts, Reactions & Solved Examples

Complete guide to d and f block elements for Class 12. Solved examples, exam tips, PYQs. The d and f block elements sit in the middle of the periodic table and…

Stoichiometry Problem Solving — The Mole Road Map

Master stoichiometry problem solving with conceptual clarity, solved examples, and exam strategies. When we burn magnesium, how much oxygen do we need?

Electrochemistry Strategy — Concepts, Formulas & Examples

How to approach electrochemistry problems and Nernst equation for JEE and NEET. Electrochemistry is one of the most problem-heavy chapters in physical…

Electrochemistry — Cells, Nernst Equation, Electrolysis, Corrosion

Electrochemistry — Cells, Nernst Equation, Electrolysis, Corrosion Electrochemistry is about the interconversion of chemical and electrical energy.

Electronegativity — Concepts, Formulas & Examples

Electronegativity trends across the periodic table and its effects. Electronegativity is the tendency of an atom to attract shared electrons in a chemical bond.

Environmental Chemistry — Pollution, Ozone, Green Chemistry

Environmental Chemistry — Pollution, Ozone, Green Chemistry Environmental chemistry studies the chemical processes occurring in the environment and the impact…

Enzymes — Concepts, Formulas & Examples

Enzymes as biological catalysts — structure, function and kinetics. Enzymes are protein catalysts that speed up biochemical reactions by factors of millions.

Equations — Concepts, Formulas & Examples

Balancing chemical equations and interpreting them. Chemical equations are the language of reactions. Balancing them is a core skill. Free guide on doubts.ai.

Everyday Chemistry — Concepts, Formulas & Examples

Chemistry in everyday life — soaps, detergents, drugs and food. Chemistry is not just in labs. Soaps, detergents, drugs, food additives, cosmetics, cleaners…

Chemical Equilibrium — Le Chatelier's Principle & Kp, Kc (Class 11)

Reversible reactions, equilibrium constant Kc and Kp, Le Chatelier's principle, factors affecting equilibrium, ionic equilibrium. NCERT Class 11 Chapter 7.

F Block — Concepts, Formulas & Examples

Lanthanides and actinides — properties, trends and applications. The f-block elements are the two rows at the bottom of the periodic table.

Fibre To Fabric — for Class 6-7

Complete guide to fibre to fabric for Class 6, Class 7. NCERT solved examples and practice questions. Built for CBSE prep. Solved with examples on doubts.ai.

Functional Groups — The Personality of Organic Molecules

Master functional groups with conceptual clarity, solved examples, and exam strategies. Organic chemistry has millions of compounds, but they don't all behave…

Gas Graphs — Concepts, Formulas & Examples

Gas law graphs — Boyle, Charles, pressure-volume-temperature. Gas laws are easier to remember as graphs than as equations. Built for Class 9-12 prep.

Gas Laws — Boyle, Charles, Avogadro, and the Ideal Gas

Master gas laws with conceptual clarity, solved examples, and exam strategies. Gases behave very differently from solids and liquids. Free guide on doubts.ai.

General Principles of Metallurgy — Extraction, Refining, Thermodynamics

General Principles of Metallurgy — Extraction, Refining, Thermodynamics Metallurgy is the science of extracting metals from their ores and refining them to a…

Green Polymers — Concepts, Formulas & Examples

Biodegradable polymers and environmental alternatives to plastics. Green polymers are biodegradable or bio-based alternatives to conventional plastics.

Grignard Reagents and Organometallic Chemistry

Master grignard reagents and organometallic chemistry with conceptual clarity, solved examples, and exam strategies. Built for JEE & NEET & CBSE prep.

Haloalkanes — Concepts, Formulas & Examples

Haloalkanes and haloarenes — preparation, properties and reactions. Haloalkanes are alkyl groups with one or more halogen atoms. Built for Class 9-12 prep.

Haloalkanes Haloarenes — Concepts, Reactions & Solved Examples

Complete guide to haloalkanes haloarenes for Class 12. Solved examples, exam tips, PYQs. When a hydrogen atom in an alkane or arene is replaced by a halogen…

How to Balance Chemical Equations — Systematic Methods

Master how to balance chemical equations with conceptual clarity, solved examples, and exam strategies. Built for JEE & NEET & CBSE prep.

IUPAC Naming — A Systematic Approach to Organic Chemistry

Master iupac naming with conceptual clarity, solved examples, and exam strategies. IUPAC (International Union of Pure and Applied Chemistry) naming gives every…

Hybridization — Concepts, Formulas & Examples

Hybridisation of orbitals — sp, sp2, sp3 and shapes of molecules. Hybridisation explains the shapes and bonding of molecules by mixing atomic orbitals to form…

Hydrocarbons — Concepts, Reactions & Solved Examples

Complete guide to hydrocarbons for Class 11. Solved examples, exam tips, PYQs. Organic chemistry starts here. Built for JEE & CBSE prep.

Hydrogen — Concepts, Reactions & Solved Examples

Complete guide to hydrogen for Class 11. Solved examples, exam tips, PYQs. Hydrogen sits at position 1 on the periodic table, but don't let that fool you —…

Industrial Chemistry — Concepts, Formulas & Examples

Major industrial processes — Haber, Contact, Ostwald and Solvay. Industrial chemistry is how chemical knowledge becomes economically useful.

Ionic Bonding — Concepts, Formulas & Examples

Ionic bond formation, lattice energy and properties of ionic compounds. Ionic bonding is the complete transfer of electrons from one atom to another, forming…

Ionic Equilibrium — pH, Buffers, Solubility Product

Master ionic equilibrium with conceptual clarity, solved examples, and exam strategies. When an ionic compound dissolves in water, it dissociates into ions.

Isomerism — Structural, Geometric, Optical

Master isomerism with conceptual clarity, solved examples, and exam strategies. Isomers are compounds with the same molecular formula but different…

Isomerism — Concepts, Formulas & Examples

Structural and stereoisomerism with examples. Isomers are compounds with the same molecular formula but different arrangements of atoms.

Kinetics — Concepts, Formulas & Examples

Chemical kinetics — rate, order, rate constant and Arrhenius equation. Chemical kinetics studies the rates of chemical reactions and the factors affecting them.

Materials — Concepts, Formulas & Examples

Materials chemistry — metals, ceramics, polymers and composites. Materials chemistry studies the properties of useful substances — metals, ceramics, polymers…

Extraction of Metals — Reduction, Electrolysis, Refining

Master extraction of metals with conceptual clarity, solved examples, and exam strategies. Metals don't exist as pure elements in nature (with rare exceptions…

Metallurgy — Concepts, Formulas & Examples

Extraction of metals — concentration, reduction and refining. Metallurgy is the extraction and purification of metals from their ores. Free guide on doubts.ai.

Metals And Nonmetals — Concepts, Reactions & Solved Examples

Complete guide to metals and nonmetals for Class 8, Class 10. NCERT solved examples and practice questions. Look at the spoon you use to eat.

Metals — Concepts, Formulas & Examples

Properties of metals, reactivity series and extraction overview. Metals are elements that lose electrons easily to form positive ions. Free guide on doubts.ai.

Mixtures — Concepts, Formulas & Examples

Types of mixtures and separation techniques. A mixture is a physical combination of two or more substances in any proportion. Built for Class 9-12 prep.

The Mole Concept — Counting Atoms the Chemistry Way

Master the mole concept with conceptual clarity, solved examples, and exam strategies. Atoms and molecules are so small that we can't count them individually —…

Mot — Concepts, Formulas & Examples

Molecular orbital theory — bonding in diatomic molecules. Molecular orbital (MO) theory explains bonding by combining atomic orbitals to form molecular…

Named Reactions — The 20 You Must Know

Master named reactions with conceptual clarity, solved examples, and exam strategies. Named reactions in organic chemistry are reactions discovered or…

Named Reactions — Concepts, Formulas & Examples

Important named reactions in organic chemistry — Wurtz, Kolbe, Cannizzaro and more. Named reactions are classic reactions identified with their discoverers.

Noble Gases — Not So Inert After All

Master noble gases with conceptual clarity, solved examples, and exam strategies. Group 18 elements — helium, neon, argon, krypton, xenon, and radon — were…

Nuclear Chemistry — Fission, Fusion, and Radioactivity

Master nuclear chemistry with conceptual clarity, solved examples, and exam strategies. Nuclear chemistry deals with changes in atomic nuclei — the tiny, dense…

Organic Analysis — Concepts, Formulas & Examples

Qualitative and quantitative analysis of organic compounds. Organic analysis determines what elements are present in a compound and in what amounts.

Organic Basics — Concepts, Formulas & Examples

Introduction to organic chemistry — tetravalency, functional groups and IUPAC. Organic chemistry is the chemistry of carbon compounds. Free guide on doubts.ai.

Organic Chemistry Basics — Hybridisation, IUPAC, Isomerism for Class 11

sp3/sp2/sp hybridisation, IUPAC nomenclature, structural and stereoisomerism, homologous series, functional groups. NCERT Class 11 Chapter 12–13.

Organic Nomenclature — Concepts, Formulas & Examples

IUPAC rules for naming organic compounds. IUPAC nomenclature is the international standard for naming organic compounds. Built for Class 9-12 prep.

Organic Reactions — Concepts, Formulas & Examples

Types of organic reactions — substitution, addition, elimination. Organic reactions can be classified into a small number of types. Built for Class 9-12 prep.

Organic Strategy — Concepts, Formulas & Examples

How to approach organic chemistry problems for NEET and CBSE. Organic chemistry has the highest weightage in NEET chemistry. Built for Class 9-12 prep.

Organic Tests — Concepts, Formulas & Examples

Distinguishing tests for organic compounds — tollen, fehling, iodoform. Organic tests are quick chemical reactions that distinguish one functional group from…

P Block Elements — Concepts, Reactions & Solved Examples

Complete guide to p block elements for Class 11, Class 12. Solved examples, exam tips, PYQs. The p block is where chemistry gets genuinely interesting.

Periodic Table — Trends, Properties & Memory Tricks

Periodic table trends: atomic radius, ionization energy, electronegativity. Memory tricks for CBSE, JEE, NEET. Built for JEE & NEET & CBSE prep.

Phenol Reactions — Concepts, Formulas & Examples

Preparation and reactions of phenol and its derivatives. Phenol is hydroxybenzene (C6H5OH). The aromatic ring activates reactions at ortho and para positions.

Physical And Chemical Changes — for Class 7

Complete guide to physical and chemical changes for Class 7. NCERT solved examples and practice questions. Every day, things around us change.

Polarity — Concepts, Formulas & Examples

Molecular polarity, dipole moment and solvent effects. Polarity describes how electron density is distributed in a molecule. Built for JEE & NEET & CBSE prep.

Polymers — Classification, Polymerization, Natural and Synthetic

Polymers — Classification, Polymerization, Natural and Synthetic Polymers are large molecules made by joining many small repeating units (monomers).

Qualitative Analysis — Identifying Ions and Salts

Master qualitative analysis with conceptual clarity, solved examples, and exam strategies. Qualitative analysis is the systematic process of determining which…

Reaction Mechanisms — Arrow Pushing for Beginners

Master reaction mechanisms with conceptual clarity, solved examples, and exam strategies. Understanding reaction mechanisms means understanding WHY reactions…

Reaction Mechanisms — Concepts, Formulas & Examples

Mechanism of common organic reactions — SN, E, addition. A reaction mechanism is the step-by-step description of how bonds break and form during a reaction.

Reactions — Concepts, Formulas & Examples

Types of chemical reactions in inorganic chemistry. Chemical reactions in inorganic chemistry fall into a few main types. Built for Class 9-12 prep.

Real Gases — Concepts, Formulas & Examples

Real Gases for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Redox Reactions — Oxidation State, Balancing & Electrochemistry (Class 11)

Oxidation and reduction, oxidation number rules, half-reaction method, balancing redox reactions, electrochemical cells. NCERT Class 11 Chapter 8.

Redox Titration — Concepts, Formulas & Examples

Redox Titration for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Redox — Concepts, Formulas & Examples

Redox for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

s-Block Elements — Alkali and Alkaline Earth Metals

s-Block Elements — Alkali and Alkaline Earth Metals The s-block elements — Groups 1 (alkali metals: Li, Na, K, Rb, Cs, Fr) and Group 2 (alkaline earth metals…

S Block — Concepts, Formulas & Examples

S Block for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Salt Hydrolysis — Why Some Salts Are Acidic or Basic

Master salt hydrolysis with conceptual clarity, solved examples, and exam strategies. Most people assume all salts give neutral solutions.

Separation of Substances — Class 6

Separation of Substances — Class 6

Solid State — Crystal Structures, Packing, Defects

Master solid state with conceptual clarity, solved examples, and exam strategies. Everything you touch is in the solid state. Built for JEE & NEET & CBSE prep.

Solid State — Concepts, Formulas & Examples

Solid State for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Solids — Concepts, Formulas & Examples

Solids for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Solutions — Concepts, Reactions & Solved Examples

Complete guide to solutions for Class 12. Solved examples, exam tips, PYQs. When salt dissolves in water, something interesting happens — the sodium and…

Sorting Materials — for Class 6

Complete guide to sorting materials for Class 6. NCERT solved examples and practice questions. Look around your classroom right now. Built for CBSE prep.

States of Matter — Kinetic Theory, Gas Laws for Class 11

Boyle's law, Charles' law, Avogadro's law, ideal gas equation, kinetic theory, van der Waals equation, liquefaction. NCERT Class 11 Chapter 5.

States — Concepts, Formulas & Examples

States for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Surface Chemistry — Adsorption, Catalysis, Colloids, Emulsions

Surface Chemistry — Adsorption, Catalysis, Colloids, Emulsions Surface chemistry studies phenomena occurring at interfaces — between solid-gas, solid-liquid…

Synthetic Fibres And Plastics — for Class 8

Complete guide to synthetic fibres and plastics for Class 8. NCERT solved examples and practice questions. Silk costs a fortune. Wool gets eaten by moths.

Thermodynamics Chemistry — Enthalpy, Entropy & Gibbs Free Energy (Class 11)

System and surroundings, enthalpy change, Hess's law, entropy, Gibbs free energy, spontaneity. NCERT Class 11 Chemistry Chapter 6. Free guide on doubts.ai.

Transition Metals — Concepts, Formulas & Examples

Transition Metals for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Transition — Concepts, Formulas & Examples

Transition for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.

Zeolites — Concepts, Formulas & Examples

Zeolites for CBSE, JEE and NEET — core concepts, must-know formulas, worked examples and common mistakes, written by an experienced Indian tutor.