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

Chapter 1: Some Basic Concepts of chemistry

Chapter 1 of the 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, and 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, uncertainty in measurements, 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 things, which gave a modern structure of atoms. In this unit, students will get to know about the discovery of fundamental particles like electrons, protons, and neutrons. Students will also study what isobars, isotopes, atomic numbers, etc., are. There are also topics like Line Spectrum of Hydrogen, Pauli's exclusion principle, Planck's quantum theory, 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 the periodic table and the development of the periodic law and the periodic table. The old periodic table, or Mendeleev's periodic table, 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 ionization 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 to various types of bonding between molecules. This chapter deals with concepts like what an ionic bond is, what a covalent bond is, 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: Thermodynamics

In this chapter, there are 22 questions, and solutions are provided here free of cost. NCERT solutions for class 11 chemistry chapter 5 Thermodynamics deals with the changes in energy or transfer of energy in physical or chemical processes. This unit talks about the different types of systems, surroundings, heat, work, energy, intensive properties, and extensive properties, as well as state functions. The first law of thermodynamics, internal energy, enthalpy change, the second law of thermodynamics, entropy, Gibbs energy, and spontaneity will be discussed.

Chapter 6: 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 7: 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.

Chapter 8: Organic chemistry- some basic principles and techniques

In this chapter, there are a total of 40 questions in the exercise, and the free solutions are available here. In this unit, you will get to know about some basic principles and techniques of analysis that 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. Some topics are,

• Nomenclature Of Organic Compounds
• Isomerism
• Fundamental Concepts In Organic Reaction Mechanism
• Methods Of Purification Of Organic Compounds
• Qualitative Analysis Of Organic Compounds
• Quantitative Analysis

Chapter 9: Hydrocarbons

This chapter has 25 questions, and the NCERT solutions for class 11 chemistry chapter 9 are available here. This unit talks about the classification of hydrocarbons, their properties, reactions, and uses. 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. You will also get the idea of aromatic hydrocarbons.

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.