Chemistry Questions and Answers – Class 11

Chemistry Class 11 Questions and Answers

Our 1000+ “Chemistry – Class 11” (along with 1000+ “Chemistry – Class 12”) questions and answers focuses on all areas of Chemistry covering 200+ topics in Chemistry. One can read Class 12 Here. These topics are chosen from a collection of most authoritative and best reference books on Chemistry. One should spend 1 hour daily for 2-3 months to learn and assimilate Chemistry comprehensively. This way of systematic learning will prepare anyone easily towards Chemistry interviews, online tests, examinations and certifications.


– 1000+ Multiple Choice Questions & Answers in Chemistry with explanations
– Every MCQ set focuses on a specific topic in Chemistry Subject


Who should Practice these Chemistry Questions?
– Anyone wishing to sharpen their knowledge of Class 11 – Chemistry Subject
– Anyone preparing for school test and many other online/Offline Tests/Contests in Chemistry
– Anyone preparing for NEET, IIT JEE, AIIMS & SAT Exams in Chemistry
– Anyone preparing for various Central board examinations in Chemistry namely CBSE, ICSE, IGCSE, and NIOS Board
– Anyone preparing for various State board examinations in Chemistry such as PUC, Intermediate exams, etc
– Anyone preparing for entrance examinations and other competitive examinations such as NTSE, Olympiad, etc
– All – High School Students and Freshers

Here’s list of Questions & Answers on Chemistry – Class 11 Subject covering 100+ topics:

1. Questions & Answers on Chemistry Basic Concepts

The section contains questions and answers on chemistry importance, matter nature, properties and their measurements, chemical combination laws, daltons atomic theory, atomic and molecular masses, mole basics, molar masses, percentage composition, stoichiometry and stoichiometric calculations.

Importance of Chemistry
Nature of Matter
Properties of Matter and their Measurement
Uncertainty in Measurement
Laws of Chemical Combination
Dalton’s Atomic Theory
Atomic and Molecular Masses
Mole Concept and Molar Masses
Percentage Composition
Stoichiometry and Stoichiometric Calculations

2. Questions on Structure of Atom

The section contains questions on subatomic particles discovery, atomic models, bohr’s model developments, bohr’s and quantum mechanical model of atom.

Discovery of Sub-atomic Particles
Atomic Models
Developments Leading to the Bohr’s Model of Atom
Bohr’s Model for Hydrogen Atom
Towards Quantum Mechanical Model of the Atom
Quantum Mechanical Model of Atom

3. Questions & Answers on Classification of Elements and Periodicity in Properties


The section contains questions and answers on periodic classification genesis, modern periodic law and its present form of periodic table, elements nomenclature with atomic numbers and also its electronic configurations, it also covers elements types like s, p, d and f blocks, elements periodic trends and classify elements needs.

Genesis of Periodic Classification
Modern Periodic Law and the Present Form of the Periodic Table
Nomenclature of Elements with Atomic Numbers > 100
Electronic Configurations of Elements and the Periodic Table
Electronic Configurations and Types of Elements: s, p, d and f Blocks
Periodic Trends in Properties of Elements
Need for Classify Elements

4. Questions on Chemical Bonding and Molecular Structure

The section contains questions on kossel lewis approach, ionic or electrovalent bonds, chemical bond parameters, vsepr and valence bond theories, hybridisation, molecular orbital theory, homonuclear diatomic molecules and hydrogen bondings.

Kossel-Lewis Approach to Chemical Bonding
Ionic or Electrovalent Bond
Bond Parameters
Valence Shell Electron Pair Repulsion (VSEPR) Theory
Valence Bond Theory
Molecular Orbital Theory
Bonding in Some Homonuclear Diatomic Molecules
Hydrogen Bonding

5. Questions & Answers on States of Matter

The section contains questions and answers on intermolecular forces, thermal energy, gaseous state, gas laws, ideal gas equation, kinetic energy and molecular speeds, kinetic molecular theory of gases, real gases behaviour, gases liquefaction and liquid state.

Intermolecular Forces
Thermal Energy
Intermolecular Forces vs Thermal Interactions
Gaseous State
Gas Laws
Ideal Gas Equation
Kinetic Energy and Molecular Speeds
Kinetic Molecular Theory of Gases
Behaviour of Real Gases: Deviation from Ideal Gas Behaviour
Liquefaction of Gases
Liquid State

6. Questions on Thermodynamics

The section contains questions on thermodynamics terms and applications, calorimetry measurement, enthalpy change, enthalpies for reactions types, spontaneity, gibbs energy change and equilibrium.

Thermodynamic Terms
Thermodynamics Applications
Measurement of ∆U and ∆H: Calorimetry
Enthalpy Change, ∆rH of a Reaction – Reaction Enthalpy
Enthalpies for Different Types of Reactions
Gibbs Energy Change and Equilibrium

7. Questions & Answers on Equilibrium

The section contains questions and answers on physical processes equilibrium, dynamic equilibrium, chemical equilibrium and equilibrium constant laws, homogeneous and heterogeneous equilibria, equilibrium constants applications, ionic equilibrium, relationship between equilibrium constant, reaction quotient and gibbs energy, acids, bases and salts, buffer solutions, sparingly soluble salts solubility equilibria, acids and bases ionization.

Equilibrium in Physical Processes
Equilibrium in Chemical Processes – Dynamic Equilibrium
Law of Chemical Equilibrium and Equilibrium Constant
Homogeneous Equilibria
Applications of Equilibrium Constants
Relationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy G
Factors Affecting Equilibria
Ionic Equilibrium in Solution
Acids, Bases and Salts
Ionization of Acids and Bases
Buffer Solutions
Solubility Equilibria of Sparingly Soluble Salts
Heterogeneous Equilibria

8. Questions on Redox Reactions


The section contains questions on redox reactions classical ideas like oxidation and reduction reactions, electron transfer reactions, oxidation number, redox reactions and electrode processes.

Classical Idea of Redox Reactions-Oxidation and Reduction Reactions
Redox Reactions in Terms of Electron Transfer Reactions
Oxidation Number
Redox Reactions and Electrode Processes

9. Questions & Answers on Hydrogen

The section contains questions and answers on hydrogen position in periodic table, dihydrogen, h2, dihydrogen preparation and properties, hydrides, water, hydrogen peroxide, heavy water and D2O.

Position of Hydrogen in the Periodic Table
Dihydrogen & H2
Preparation of Dihydrogen & H2
Properties of Dihydrogen
Hydrogen Peroxide (H2O2)
Heavy Water & D2O
Dihydrogen as a Fuel

10. Questions on s-Block Elements

The section contains questions on group 1 and group 2 elements, alkali metals and alkaline earth metals general characteristics, anomalous properties of lithium and beryllium anomalous behaviour. It also covers some important compounds of sodium and calcium, biological importance of sodium, potassium, magnesium and calcium.

Group 1 Elements: Alkali Metals
General Characteristics of the Compounds of the Alkali Metals
Anomalous Properties of Lithium
Important Compounds of Sodium
Biological Importance of Sodium and Potassium
Group 2 Elements : Alkaline Earth Metals
Anomalous Behaviour of Beryllium
Important Compounds of Calcium
General Characteristics of Compounds of the Alkaline Earth Metals
Biological Importance of Magnesium and Calcium

11. Questions & Answers on p-Block Elements

The section contains questions and answers on group 13 and 14 elements like boron and carbon family, some important compounds of boron, carbon and silicon, carbon allotropes, boron and aluminium compounds uses, boron and carbon important trends and anomalous properties.

Group 13 Elements: Boron Family
Important Trends and Anomalous Properties of Boron
Important Compounds of Boron
Uses of Boron and Aluminium and their Compounds
Group 14 Elements: Carbon Family
Allotropes of Carbon
Important Compounds of Carbon and Silicon
Important Trends and Anomalous Behaviour of Carbon

12. Questions on Organic Chemistry – Basic Principles and Techniques

The section contains questions on carbon tetravalence, organic compounds shapes, structural representations and its classification, isomerism, organic reaction mechanism fundamentals, purification methods and qualitative analysis of organic compounds, organic chemistry basics and organic compounds nomenclature.

Tetravalence of Carbon: Shapes of Organic Compounds
Structural Representations of Organic Compounds
Classification of Organic Compounds
Fundamental Concepts in Organic Reaction Mechanism
Methods of Purification of Organic Compounds
Qualitative Analysis of Organic Compounds
Quantitative Analysis
Organic Chemistry Basics
Nomenclature of Organic Compounds

13. Questions & Answers on Hydrocarbons


The section contains questions and answers on hydrocarbons classification, alkanes, alkenes, alkynes, aromatic hydrocarbon, carcinogenicity and toxicity.

Aromatic Hydrocarbon
Hydrocarbons Classification
Carcinogenicity and Toxicity

14. Questions on Environmental Chemistry

The sections covers questions on different type of pollutions like environmental pollution, atmospheric pollution, water and soil pollution, industrial waste, control environmental pollution strategies and green chemistry.

Environmental Pollution
Atmospheric Pollution
Water Pollution
Soil Pollution
Industrial Waste
Strategies to Control Environmental Pollution
Green Chemistry
If you would like to learn Chemistry thoroughly, you should attempt to work on the complete set of questions and answers mentioned above. It will immensely help anyone trying to crack an exam or an interview.

Wish you the best in your endeavor to learn and master Chemistry!

Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn