NEET Chemistry PYQ analysis by chapter

Chemistry is often the most scoring section in NEET once you know where questions come from. Here is what previous year papers show for Physical, Organic and Inorganic.

Paper Predict Notes · 24 Mar 2026

Chemistry has 45 of the 180 questions in NEET. For many toppers it is the section where they lose the fewest marks, because a large share of its questions can be answered quickly and confidently with the right preparation. For other students it feels scattered, with three branches that each need a different kind of study.

Previous year questions make Chemistry much clearer. They show that each branch has a recognisable pattern, and that NCERT is the source of a very large share of questions, especially in Inorganic. This article goes through those patterns branch by branch and chapter by chapter.

The patterns below describe the types of questions that repeat. Exact numbers per chapter change each year. Check the latest NTA syllabus before you plan your revision.

The three branches at a glance

• Physical Chemistry has numericals and conceptual questions built on formulas. It rewards practice.
• Organic Chemistry has reactions, mechanisms, isomerism and the properties of compounds. It rewards understanding plus memory.
• Inorganic Chemistry has trends, properties, structures and facts taken closely from NCERT. It rewards repeated reading.

Each branch contributes a significant share of questions, so none can be left out.

Physical Chemistry

Some Basic Concepts of Chemistry

• Mole concept and molar mass.
• Empirical and molecular formulas.
• Limiting reagent and stoichiometry.
• Concentration terms such as molarity and molality.

These calculations appear directly and also underpin other chapters, so accuracy here matters.

Structure of Atom

• Quantum numbers and their allowed values.
• Electronic configuration and exceptions.
• Bohr model energies and the hydrogen spectrum.
• De Broglie wavelength and the uncertainty principle.

Thermodynamics

• Enthalpy, Hess's law and enthalpy of formation and combustion.
• Entropy and Gibbs free energy.
• Spontaneity conditions.

Equilibrium

• Kc and Kp and the relation between them.
• Le Chatelier's principle.
• pH, pOH and buffer solutions.
• Solubility product and the common ion effect.

Ionic equilibrium produces many short numericals. Practise pH calculations until they are routine.

Solutions

• Raoult's law.
• Colligative properties: relative lowering of vapour pressure, boiling point elevation, freezing point depression and osmotic pressure.
• The van 't Hoff factor.

Electrochemistry

• Electrochemical cells and cell notation.
• Nernst equation and standard electrode potentials.
• Conductance, molar conductivity and Kohlrausch's law.
• Faraday's laws of electrolysis.

Chemical Kinetics

• Rate law, order and molecularity.
• Integrated rate equations and half-life, especially for first-order reactions.
• Arrhenius equation and activation energy.

First-order half-life questions are among the most repeated in Physical Chemistry.

Organic Chemistry

General Organic Chemistry and basic principles

This is the foundation for the whole branch.

• IUPAC nomenclature.
• Isomerism, including structural, geometrical and optical.
• Inductive effect, resonance and hyperconjugation.
• Stability of carbocations, carbanions and free radicals.
• Acidity and basicity comparisons.

Comparison questions, such as "arrange in increasing order of acidity", are very common.

Hydrocarbons

• Preparation and reactions of alkanes, alkenes and alkynes.
• Markovnikov and anti-Markovnikov addition.
• Aromaticity and electrophilic substitution in benzene.

Haloalkanes and haloarenes

• SN1 and SN2 mechanisms and the factors that favour each.
• Elimination reactions.
• Reactions of haloarenes.

Alcohols, phenols and ethers

• Preparation and properties.
• Acidity of alcohols and phenols.
• Important named reactions.

Aldehydes, ketones and carboxylic acids

• Nucleophilic addition reactions.
• Named reactions such as aldol condensation, Cannizzaro reaction and others listed in NCERT.
• Tests to distinguish aldehydes and ketones.
• Acidity of carboxylic acids.

Amines

• Basicity of amines.
• Preparation and reactions, including diazonium salts.

Biomolecules

• Carbohydrates, proteins, vitamins and nucleic acids.
• Structures and classifications given in NCERT.

Biomolecules questions are usually direct and fact-based, which makes this a quick chapter to secure.

Inorganic Chemistry

Inorganic is where NCERT matters most. Many questions are close to the wording of the textbook.

Classification of elements and periodicity

• Trends in atomic and ionic radius, ionisation enthalpy, electron gain enthalpy and electronegativity.
• Exceptions to these trends.

Chemical bonding and molecular structure

• VSEPR theory and the shapes of molecules.
• Hybridisation.
• Molecular orbital theory, bond order and magnetic character.
• Dipole moment and hydrogen bonding.

Bonding is one of the most consistently tested chapters in the whole Chemistry section.

p-Block elements

• Group trends and anomalous behaviour of the first element.
• Structures of oxides and oxoacids.
• Important compounds and their properties.

d- and f-Block elements

• Electronic configuration and oxidation states.
• Colour, magnetic behaviour and catalytic properties.
• Lanthanoid contraction.
• Important compounds such as potassium dichromate and potassium permanganate.

Coordination compounds

• Werner's theory.
• IUPAC nomenclature of complexes.
• Isomerism in coordination compounds.
• Valence bond theory and crystal field theory basics.

Nomenclature and isomerism questions return regularly.

Patterns that repeat across Chemistry

• NCERT lines. Many Inorganic and Organic questions use NCERT statements directly.
• Comparison questions. Ordering by acidity, basicity, stability, radius or bond angle.
• Named reactions. Reagents and products of named reactions in the NCERT list.
• Short numericals. First-order kinetics, pH, colligative properties and electrochemistry.
• Exceptions. Exceptions to periodic trends and electronic configurations.

How to use PYQs for Chemistry revision

Physical Chemistry

1. Revise the formula sheet for the chapter.
2. Solve all PYQs for the chapter in one sitting.
3. Note which formulas you needed and which you forgot.
4. Re-solve wrong questions after a few days.

Organic Chemistry

1. Revise the chapter's reactions as a map: what each compound can be made from and converted into.
2. Solve PYQs and note which reactions appear.
3. Practise conversion questions that combine two or three reactions.

Inorganic Chemistry

1. Read the NCERT chapter.
2. Solve PYQs and highlight the NCERT lines they came from.
3. Re-read the highlighted lines every few days.

Pairing PYQs with predicted questions

Previous year questions show how concepts are tested. Predicted questions help you choose what to practise next. Paper Predict gives predicted questions with probability scores, reviewed by experts, and reported 80% accuracy for NEET in 2025 and 2026.

See Paper Predict's accuracy reports ↗

Paper Predict Notes is the notes vertical of Paper Predict. The Chemistry notes place PYQs next to each topic and flag the most repeated reactions, trends and formulas in Points often asked boxes.

Frequently asked questions

Which Chemistry branch is most important for NEET?

All three contribute significantly. Inorganic rewards NCERT reading, Organic rewards understanding reactions, and Physical rewards numerical practice.

Is NCERT enough for NEET Chemistry?

NCERT is essential, especially for Inorganic. Add PYQs and practice questions for Physical and Organic.

How many times should I read NCERT Inorganic?

At least three to four times before the exam, with short revisions of trends and exceptions in between.

How do I remember named reactions?

Learn the mechanism once, then revise a reaction chart regularly. Memory tricks help for reagents and conditions.

The short version

NEET Chemistry is predictable once you see how each branch is tested. Physical repeats short numericals on kinetics, equilibrium, solutions and electrochemistry. Organic repeats GOC comparisons, named reactions and conversions. Inorganic repeats NCERT lines on bonding, periodicity, p-block, d-block and coordination compounds. Revise each branch its own way and use PYQs to find the lines and formulas that matter most.

About Paper Predict. Paper Predict is an AI-powered exam preparation platform; Paper Predict Notes is its notes vertical. See the accuracy reports.