NUMS Chemistry Most Important Topics 2026
The top 5 NUMS Chemistry chapters (Chemical Bonding, Atomic Structure, s-Block and p-Block Elements, Fundamental Concepts of Chemistry and Chemistry of Hydrocarbons) carry about 41 percent of the 40 Chemistry MCQs on the NUMS paper. That ranking comes from counting every Chemistry MCQ in the 10 solved NUMS past papers on TestUstad, 476 questions in total, and matching each one to the chapter it tests.
10 solved NUMS past papers analysed (2014 to 2023).
NUMS Chemistry chapter frequency table
All 23 Chemistry chapters on the NUMS syllabus, heaviest first. The subtopics under each chapter name are the ones it is most often examined on.
| # | Chapter | Expected MCQs | Share of Chemistry | Priority |
|---|---|---|---|---|
| 1 | Chemical BondingHybridization, VSEPR Theory, Bond Energy | 4.9 | 12.2% | Critical |
| 2 | Atomic StructureDiscovery of the Proton, Quantum Numbers, Electronic Configuration | 3.4 | 8.6% | Critical |
| 3 | s-Block and p-Block ElementsPeriodic Properties and Trends, Reactions of Group II Elements, Reactions of Group I Elements | 3.4 | 8.4% | Critical |
| 4 | Fundamental Concepts of ChemistryMoles and Avogadro's Number, Theoretical and Percentage Yield | 2.7 | 6.7% | Critical |
| 5 | Chemistry of HydrocarbonsAlkanes, Benzene and Aromatic Compounds, Alkenes | 2.2 | 5.5% | Critical |
| 6 | Alcohols and PhenolsAlcohols, Phenols | 1.8 | 4.6% | Important |
| 7 | Carboxylic AcidsReactivity of Carboxylic Acids, Carboxylic Acid Derivatives, Nomenclature, Structure and Preparation | 1.8 | 4.6% | Important |
| 8 | ElectrochemistryRedox Reactions, Oxidation and Reduction, Standard Hydrogen Electrode | 1.8 | 4.6% | Important |
| 9 | Reaction KineticsFactors Affecting Rate of Reaction, Order of Reaction, Activation Energy and Activated Complex | 1.8 | 4.6% | Important |
| 10 | Thermochemistry and Energetics of Chemical ReactionsSystem, Surroundings and State Functions, Enthalpy, Exothermic and Endothermic Reactions | 1.8 | 4.6% | Important |
| 11 | Aldehydes and KetonesReactivity of Aldehydes and Ketones, Nucleophilic Addition Reactions | 1.6 | 4.0% | Important |
| 12 | GasesIdeal Gas Equation, Kinetic Molecular Theory, Standard Temperature and Pressure | 1.6 | 4.0% | Important |
| 13 | Alkyl HalidesNucleophilic Substitution, Nomenclature, Structure and Reactivity, Elimination Reactions | 1.5 | 3.8% | Important |
| 14 | MacromoleculesClassification of Proteins | 1.3 | 3.4% | Standard |
| 15 | Chemical EquilibriumLe Chatelier's Principle, Reversible Reactions, Haber's Process | 1.3 | 3.2% | Standard |
| 16 | Fundamental Principles of Organic ChemistryIsomerism, Functional Groups, Classification of Organic Compounds | 1.3 | 3.2% | Standard |
| 17 | LiquidsEvaporation, Boiling Point and Vapour Pressure, Hydrogen Bonding, Properties of Liquids | 1.3 | 3.2% | Standard |
| 18 | SolidsCrystalline Solids, Shape of Ionic Crystals, Lattice Energy | 1.1 | 2.7% | Standard |
| 19 | Acids, Bases and SaltsSalts and Hydrolysis | 0.8 | 2.1% | Standard |
| 20 | Environmental ChemistryAtmospheric Pollution, Water Pollution and Treatment | 0.8 | 2.1% | Standard |
| 21 | Transition ElementsElectronic Structure of d-Block Elements | 0.8 | 2.1% | Standard |
| 22 | Solutions and ColloidsConcentration Units | 0.4 | 1.1% | Standard |
| 23 | Analytical Chemistry | 0.3 | 0.8% | Standard |
How this was worked out: Every MCQ in the 10 solved NUMS papers we hold (2014 to 2023) was matched to the chapter it tests, which is how the share column is worked out. These are counts of real questions from real NUMS MDCAT papers, not an opinion about which chapters matter. The MCQ column then applies each chapter's share to the 40 Chemistry MCQs the current NUMS pattern carries, rather than averaging the raw counts: those older papers were set to different totals, and a number taken straight off them would describe a paper nobody is sitting any more.
Top 10 most important Chemistry topics for NUMS 2026
Chemical Bonding
CriticalChemical Bonding is 12.2 percent of the NUMS Chemistry paper and works out at about 4.9 MCQs on the current paper. It is examined mostly on Hybridization, VSEPR Theory and Bond Energy.
Atomic Structure
CriticalAtomic Structure is 8.6 percent of the NUMS Chemistry paper and works out at about 3.4 MCQs on the current paper. It is examined mostly on Discovery of the Proton, Quantum Numbers and Electronic Configuration.
s-Block and p-Block Elements
Criticals-Block and p-Block Elements is 8.4 percent of the NUMS Chemistry paper and works out at about 3.4 MCQs on the current paper. It is examined mostly on Periodic Properties and Trends, Reactions of Group II Elements and Reactions of Group I Elements.
Fundamental Concepts of Chemistry is 6.7 percent of the NUMS Chemistry paper and works out at about 2.7 MCQs on the current paper. It is examined mostly on Moles and Avogadro's Number and Theoretical and Percentage Yield.
Chemistry of Hydrocarbons
CriticalChemistry of Hydrocarbons is 5.5 percent of the NUMS Chemistry paper and works out at about 2.2 MCQs on the current paper. It is examined mostly on Alkanes, Benzene and Aromatic Compounds and Alkenes.
Alcohols and Phenols
ImportantAlcohols and Phenols is 4.6 percent of the NUMS Chemistry paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Alcohols and Phenols.
Carboxylic Acids
ImportantCarboxylic Acids is 4.6 percent of the NUMS Chemistry paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Reactivity of Carboxylic Acids, Carboxylic Acid Derivatives and Nomenclature, Structure and Preparation.
Electrochemistry
ImportantElectrochemistry is 4.6 percent of the NUMS Chemistry paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Redox Reactions, Oxidation and Reduction and Standard Hydrogen Electrode.
Reaction Kinetics
ImportantReaction Kinetics is 4.6 percent of the NUMS Chemistry paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on Factors Affecting Rate of Reaction, Order of Reaction and Activation Energy and Activated Complex.
Thermochemistry and Energetics of Chemical Reactions is 4.6 percent of the NUMS Chemistry paper and works out at about 1.8 MCQs on the current paper. It is examined mostly on System, Surroundings and State Functions, Enthalpy and Exothermic and Endothermic Reactions.
Practise 728 free Thermochemistry and Energetics of Chemical Reactions MCQs
Every Chemistry chapter on the NUMS syllabus
13,720 free Chemistry MCQs across 23 chapters, every answer explained.
NUMS Chemistry most important topics: frequently asked questions
What are the most important Chemistry topics for NUMS 2026?
The highest-value NUMS Chemistry chapters are Chemical Bonding (about 4.9 MCQs), Atomic Structure (about 3.4 MCQs), s-Block and p-Block Elements (about 3.4 MCQs), Fundamental Concepts of Chemistry (about 2.7 MCQs) and Chemistry of Hydrocarbons (about 2.2 MCQs). Together they account for 41 percent of the 40 Chemistry MCQs on the NUMS paper. The ranking comes from counting every Chemistry MCQ in the 10 solved NUMS past papers on TestUstad.
How many Chemistry MCQs are on the NUMS paper?
Chemistry is worth 40 MCQs on the NUMS paper as set by National University of Medical Sciences, spread across 23 chapters. This page ranks all 23 of them by how many of those MCQs each chapter is worth.
Where does this NUMS Chemistry ranking come from?
From 10 solved NUMS past papers held on TestUstad, covering 2014 to 2023. Every Chemistry MCQ in them, 476 questions in total, is tagged to the chapter it tests, which is where each chapter's share comes from. The expected MCQ counts apply that share to the 40 Chemistry MCQs the current NUMS pattern carries. You can open any of those papers and check.
Should I skip the low-priority Chemistry chapters for NUMS?
No. Every chapter in this table appears on the NUMS paper, and NUMS is decided by a handful of marks. A chapter marked Standard still costs you the marks you drop on it. Use this ranking to decide the order you study in and how long you spend on each chapter, not to cut chapters out.
Where can I practise these NUMS Chemistry chapters?
Every chapter on this page links to its own free Chemistry MCQs on TestUstad, 13,720 questions across the 23 chapters NUMS examines. Practice is free and unlimited with no account, and every question carries a written explanation of why the correct option is correct.