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NCERT Solutions for Class 11 Chemistry - Get Free PDFs 2024-25

NCERT Solutions for Class 11 Chemistry - Get Free PDFs 2024-25

Edited By Irshad Anwar | Updated on May 16, 2024 07:15 PM IST

NCERT Solutions for Class 11 Chemistry - Download PDFs

NCERT Solutions for Class 11 Chemistry provided here are updated for the CBSE 2024-25 exam. Chemistry is a scoring subject on boards and competitive exams. NCERT solutions, class 11, chemistry, will help students understand underlying concepts and how to answer different types of questions. The structure of the class 11 chemistry NCERT solutions is presented in two parts, with a total of 14 units, of which 7 units are in one part and 7 units in the other. These chapter-wise NCERT solutions cover all the important topics in detail. Fourteen units of NCERT class 11 chemistry covers several concepts of physical, organic and inorganic chemistry. In class 11 NCERT books, you will be introduced to physical chemistry first, then read some important concepts of inorganic chemistry, and finally, you will get a taste of organic chemistry. By referring to the NCERT solutions for class 11 , students can understand all the important concepts and practice questions well enough before their examination.

Chapter-wise NCERT Solutions for Class 11 Chemistry

Chemistry Class 11 NCERT Solutions help students both in the preparation of CBSE Class 11 exams as well in competitive exams like NEET, JEE Mains, VITEEE, BITSAT, etc. The NCERT class 11 chemistry solutions are designed by our physical, inorganic and organic chemistry experts to help students solve conceptual and numerical problems in the class 11 NCERT textbooks. NCERT solutions for class 11 have a detailed step-by-step explanation of textbook problems. Links are given below for all chapters of chemistry.

The following chapters have been deleted from the NCERT Class 11 Chemistry textbook in 2023–24.

NCERT Solutions for Class 11 Chemistry Chapter Brief

Chapter 1: Some Basic Concepts of chemistry

Chapter 1 of chemistry book has 36 questions. The solutions to all the exercises are given here and the solutions are free. This unit explains the importance of chemistry in our daily life. This unit briefs about fundamental concepts of the subject like – states of matter, Classification of matter, properties of matter and their measurement like mass and weight, volume, density, temperature. This chapter further explains an atomic theory, the law of chemical combinations, chemical reactions, the law of dilution, Stoichiometry, the mixture of acids and bases, normality, the law of chemical equivalence, etc.

Chapter 2: Structure of Atom

The NCERT class 11 chapter 2 has a total of 67 questions. You will find all the solutions to your problems here. This unit deals with the various advancements being made to explain different atomic models which gave a modern structure of atoms. In this unit, students will get to know about the discovery of fundamental particles like electron, proton, and neutrons. Students will also study what isobars, isotopes, atomic numbers, etc is. There are also topics like Pauli's exclusion principle and Hund's rule which are also discussed in this unit.

Chapter 3: Classification of Elements and Periodicity in Properties

In this chapter students will learn about the history of periodic table, and development of the periodic law and the periodic table. The old periodic table or Mendeleev's periodic table was arranged elements based on atomic masses. The modern periodic table arranges the elements based on their atomic numbers. In the periodic table, periodic trends are observed in ionisation enthalpies, atomic sizes, electron gain enthalpies, electronegativity and valence. This chapter has a total of 40 questions, the solutions to which can be downloaded by clicking the above link.

Chapter 4: Chemical Bonding and Molecular Structure

In NCERT solutions for class 11 Chemistry, chapter 4, you will be introduced with various types of bonding between molecules. This chapter deals with concepts like what is ionic bond, what is a covalent bond, the polar character of covalent bonds, valence electrons, VSEPR theory, Lewis structure, the concept of hybridization that involves s, d and p orbitals, the molecular orbital theory (MOT) of homonuclear diatomic molecules and more. There are a total of 40 questions in the exercise of the unit.

Chapter 5: States of Matter

As you know matter exists in 3 physical states- solid, liquid and gas. This unit deals with the two states of matter namely liquid state and gaseous state, the laws governing the behaviuor of ideal gases and properties associated with liquids. The important topics of this unit are intermolecular forces, thermal energy, the gaseous state, ideal gas equation, kinetic molecular theory of gases, liquid State and more. There are only 23 questions in this chapter but these are very important for the exam perspective.

Chapter 6: Thermodynamics

In this chapter, there are 22 questions and solutions are provided here free of cost. NCERT solutions for class 11 chemistry chapter 6 Thermodynamics deals with the changes in energy or transfer of energy in physical or chemical processes. This unit talks about the concepts of various systems and different types of systems, surroundings, heat, work, energy and intensive properties and extensive properties and state functions. The first law of thermodynamics, internal energy, enthalpy, the second law of thermodynamics, entropy, Gibbs energy will be discussed.

Chapter 7: Equilibrium

In this chapter, there are 73 questions and it is really an important chapter for the board exam as well as competitive exams. The chapter discusses the concept of equilibrium in chemical and physical processes and provides details about equilibrium's dynamic nature. There are some insights about the equilibrium constant, the law of mass action and the factors affecting the equilibrium state. Also, it tells about ionic equilibrium, ionisation of bases and acids, weak and strong electrolytes, degree of ionisation, the concept of pH, etc

Chapter 8: Redox Reactions

By reading this chapter, you will learn how to balance a reaction. You will study the concept of reduction and oxidation in detail and gain various insights about redox reactions. Also, you will explore oxidation number, balancing redox reactions, loss and gain of electrons, changes in oxidation number and applications of redox reactions. In this unit, there are 30 questions in total and you will find all the solutions for your questions here. Click on the above link for NCERT solutions for class 11 chemistry, chapter 8.

Chapter 9: Hydrogen

You will be surprised to know that Hydrogen is the most abundant element in our universe and the third most abundant element on the surface of the globe. In this unit, you will learn about hydrogen, its occurrence, and its position in the periodic table. And we will also learn about the isotopes of hydrogen, how they are prepared and its properties. The chapter has 36 questions and you will get all the free solutions here.

Chapter 10: The s-Block Elements

This chapter talks about the s-block elements of the periodic table. In s-block, there are a total of two groups (1&2). The elements of Group 1 are lithium(Li), sodium(Na), potassium(K), rubidium(Rb), caesium(Cs) and francium(Fr). The elements of Group 2 beryllium(Be), Magnesium(Mg), Calcium(Ca), Strontium(Sr), Barium(Ba) and Radium(Ra). In this unit, we will discuss the properties and preparation of important compounds of that element and also discuss some important trends in detail. The chapter has 32 questions.

Chapter 11: The p-Block Elements

In this unit, you will get to know the general introduction about p-block elements. In the periodic table, p-block elements are arranged in six groups which are 13, 14, 15, 16, 17, and 18. This unit covers only two groups 13 and 14, the rest groups will be covered in the class 12th chapter 7 The p-Block elements. In this unit, there are 38 questions in the exercise.

Chapter 12: Organic Chemistry

In this chapter, there are a total of 40 questions in the exercise and the free solutions are available here. Some Basic Principles and Techniques- In this unit, you will get to know about some basic principles and techniques of analysis which are required for understanding the properties and formation of organic compounds. And also discuss some basic concepts in reactivity and structure of organic compounds, which are formed due to the covalent bonding.

Chapter 13: Hydrocarbons

This chapter has 25 questions and the NCERT solutions for class 11 chemistry chapter 13 are available here. This unit talks about the classification of hydrocarbons, its properties, reactions, and use. Hydrocarbon means the compounds of hydrogen and carbon only. Hydrocarbons are an important source of energy. In this unit, you will get to know about aliphatic hydrocarbons-alkanes, alkenes and alkynes, their IUPAC nomenclature, chemical reactions, and physical properties.

Chapter 14: Environmental Chemistry

This unit focus on environmental chemistry. Environmental chemistry is a branch of chemistry which deals with the chemical change, transport reactions, effects and fates of chemical species in the environment. In this unit, you will get to know about environmental pollution related to the water, soil, and air, cause of smog, depletion of the ozone layer, global warming, greenhouse effect, etc. There are a total of 20 questions in this chapter.

Class 11 is very important in the sense that it builds your basics, which will help you in class 12, so it is advised to not leave your doubts pending. Solve all the problems of the NCERT books and if you are stuck somewhere, we will help you by providing free solutions to all the NCERT problems. We are providing class 11 NCERT chemistry solutions which are prepared by subject experts. The aim of the NCERT solutions for class 11 chemistry is to develop a basic understanding of the concepts by the students.

NCERT Solutions for Class 11 Subject-Wise

Benefits of NCERT Solutions for Class 11 Chemistry

  • These class 11 NCERT solutions are very easy to understand as they are solved using the step-by-step method.
  • It gives you in-depth knowledge of the concepts and chapters, which will also help you in various competitive exams.
  • These class 11 NCERT chemistry solutions are not only helpful to score good marks in the exam but they will also build the fundamentals of chemistry, which will be good for your further studies.
  • In NCERT solutions for class 11 Chemistry, logical approach and methodology are used to develop your logical thinking which is needed not only for chemistry but to study every subject.

NCERT Books and NCERT Syllabus:

Frequently Asked Question (FAQs)

1. Whether NCERT solutions for chemistry is helpful for competitive exams?

Yes, by solving questions in NCERT, the concepts studied in the chemistry chapter can be understood well. This will help in final exams of class 11 and competitive exam as well.

2. Which chapters of class 11 NCERT chemistry are important for exams

All the chapters are important. Important focus must be given on organic chemistry as it provides base for further understanding 

3. How many books are there for NCERT class 11 chemistry?

There are 2 books and both must be covered very religiously 


Upcoming School Exams

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A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

Option 1)

0.34\; J

Option 2)

0.16\; J

Option 3)

1.00\; J

Option 4)

0.67\; J

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times.  Assume that the potential energy lost each time he lowers the mass is dissipated.  How much fat will he use up considering the work done only when the weight is lifted up ?  Fat supplies 3.8×107 J of energy per kg which is converted to mechanical energy with a 20% efficiency rate.  Take g = 9.8 ms−2 :

Option 1)

2.45×10−3 kg

Option 2)

 6.45×10−3 kg

Option 3)

 9.89×10−3 kg

Option 4)

12.89×10−3 kg


An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range

Option 1)

2,000 \; J - 5,000\; J

Option 2)

200 \, \, J - 500 \, \, J

Option 3)

2\times 10^{5}J-3\times 10^{5}J

Option 4)

20,000 \, \, J - 50,000 \, \, J

A particle is projected at 600   to the horizontal with a kinetic energy K. The kinetic energy at the highest point

Option 1)


Option 2)

\; K\;

Option 3)


Option 4)


In the reaction,

2Al_{(s)}+6HCL_{(aq)}\rightarrow 2Al^{3+}\, _{(aq)}+6Cl^{-}\, _{(aq)}+3H_{2(g)}

Option 1)

11.2\, L\, H_{2(g)}  at STP  is produced for every mole HCL_{(aq)}  consumed

Option 2)

6L\, HCl_{(aq)}  is consumed for ever 3L\, H_{2(g)}      produced

Option 3)

33.6 L\, H_{2(g)} is produced regardless of temperature and pressure for every mole Al that reacts

Option 4)

67.2\, L\, H_{2(g)} at STP is produced for every mole Al that reacts .

How many moles of magnesium phosphate, Mg_{3}(PO_{4})_{2} will contain 0.25 mole of oxygen atoms?

Option 1)


Option 2)

3.125 × 10-2

Option 3)

1.25 × 10-2

Option 4)

2.5 × 10-2

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

Option 1)

decrease twice

Option 2)

increase two fold

Option 3)

remain unchanged

Option 4)

be a function of the molecular mass of the substance.

With increase of temperature, which of these changes?

Option 1)


Option 2)

Weight fraction of solute

Option 3)

Fraction of solute present in water

Option 4)

Mole fraction.

Number of atoms in 558.5 gram Fe (at. wt.of Fe = 55.85 g mol-1) is

Option 1)

twice that in 60 g carbon

Option 2)

6.023 × 1022

Option 3)

half that in 8 g He

Option 4)

558.5 × 6.023 × 1023

A pulley of radius 2 m is rotated about its axis by a force F = (20t - 5t2) newton (where t is measured in seconds) applied tangentially. If the moment of inertia of the pulley about its axis of rotation is 10 kg m2 , the number of rotations made by the pulley before its direction of motion if reversed, is

Option 1)

less than 3

Option 2)

more than 3 but less than 6

Option 3)

more than 6 but less than 9

Option 4)

more than 9

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