Ncert Solutions of Chemistry for Class 11 is not only the demand of the students but also the basic needs to score good marks in their board exams. The exercise of any chapter maintains the gaps that is left among the students after reading any concepts of a topic. Solution of any chapter creates confidence and remove confusion among the students. Taking the view of the students, we have prepared and published the ncert solutions of each chapter very carefully, broadly and simple manner so that even weak students can easily understand the way of answering themselves.
These solutions will instruct and guide the students so that they can answer even their own language and score a good rank in any exam. These solutions of all the chapters of chemistry will also make them strong to get results in the entrance exams like Neet, Jee(mains), IIT advance and other exams. After reading solution of each exercise, students get interest in solving objective level questions. This attitude enhances the temperament for study more and more. We shall study solution of each chapter in chemistry 11th one by one in the following steps
Ncert Solutions of Chemistry for Class 11
There are the chapters of chemistry 11th for which we are uploading the NCERT Solutions. We have included all the chapters which are necessary for the students of class 11th in 2024 – 2025 session. They are followings:
- Ncert Solutions of Chemistry for Class 11:Some Basic Concepts of chemistry
- Ncert Solutions of Chemistry for Class 11: Atomic structure
- Ncert Solutions of Chemistry for Class 11: Classification of Elements and Periodicity in properties
- Ncert Solutions of Chemistry for Class 11: Chemical Bonding and molecular structure
- Ncert Solutions of Chemistry for Class 11: Thermodynamic
- Ncert Solutions of Chemistry for Class 11: Chemical Equilibria
- Ncert Solutions of Chemistry for Class 11: Ionic Equilibrium
- Ncert Solutions of Chemistry for Class 11: Redox Reactions
- Ncert Solutions of Chemistry for Class 11: Some basic Principles and Techniques of Organic chemistry
- Ncert Solutions of Chemistry for Class 11: Hydrocarbons
Note:- Some chapters have been excluded from the old Syllabus, They are State of matter, Hydrogen, s- Block elements, p – Block elements and Environmental chemistry.
Marking scheme for cbse students for the session 2024 – 2025
Here, we learn about the marking scheme for each chapter as decided by the scholars of cbse board. We must know about the distribution of marks in theory paper because this will help us to study the syllabus of chemistry for class 11th in proper way. You all must know that the chemistry paper carries all over 100 marks out of which theory paper carries 70 marks and practical paper holds 30 marks.
| S.NO. | Units | Marks |
|---|---|---|
| 1 | Some Basic concepts of Chemistry | 7 |
| 2 | Atomic Structure | 9 |
| 3 | Classification of Elements and Periodicity in properties | 6 |
| 4 | Chemical bonding and molecular structure | 7 |
| 5 | Thermodynamics | 9 |
| 6 | Equilibrium | 7 |
| 7 | Redox Reactions | 4 |
| 8 | Organic chemistry: Some basic Principles and Techniques | 11 |
| 9 | Hydrocarbons | 10 |
| 10 | Total | 70 |
Chapter details for Ncert Solutions of Chemistry for Class 11
Here, we shall discuss the topics of each chapter which are required for the solutions of the questions. We should also focus on the relevant formulas to solve the numerical problems. Let’s start to detail each chapter one by one in the following ways:
Chapter 1: Some Basic Concepts of Chemistry: This chapter introduces the importance and scope of chemistry. It provides us historical approach to particulate and identify the nature of matter, laws of chemical combinations, Dalton’s atomic theory regarding concepts of elements, atoms and molecules. Atomic and molecular masses. We also take up questions of mole concept and molar mass, percentage composition and empirical and molecular formulas. Questions have been also covered from the topics like balancing of chemical equations and calculations based on stoichiometry.
Chapter 2: Atomic structure or structure of atoms. Ncert Solutions of Chemistry for 11th includes structure of atoms as the 2nd chapter. In this solution, we should follow discovery of fundamental particles like electron, proton and neutron. Atomic number, isotopes and isobars. Thomson model and its limitations, Rutherford model and its limitations. Bohr’s model and its limitations. Concept of shells and subshells. Dual nature of matter and light, de Broglie’s relationship, Heisenberg’s uncertainty principle, concepts of orbitals. Quantum numbers, shapes of s, p and d orbitals. Rules for filling electrons in orbitals. Aufbau principle and Hunds rule. Electronic Configuration of atoms and stability of half filled and completely filled orbitals.
Chapter 3: Classification of elements and periodicity in properties. This chapter is very important in Ncert Solutions of Chemistry for 11th. This chapter strengthens the backbone of chemistry. We should cover the topics in this chapter are significance of classification and brief history of the development of periodic table. Modern periodic law and the present form of periodic table. Trends in properties of elements like atomic radii, ionic radii, inert gas radii. Variation in Ionisation enthalpy, electron gain enthalpy, electronegativity and valence.
Chapter 4. Chemical Bonding and Molecular Structure. In this chapter the following topics have been included. They are valence electrons, ionic bond, covalent bond, bond parameters. Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory. We should also know about resonance, geometry of covalent molecules, VSEPR theory and concepts of hybridisation involving s, p and d orbitals. Shape of some simple molecules, molecular orbital theory of homonuclear diatomic molecules and hydrogen bond.
Chapter 5: Thermodynamics. Ncert Solutions of Chemistry for 11th refers thermodynamics as 5th chapter. This chapter involves the following topics. Concepts of system, types of systems and surroundings. Concepts of work, heat , energy, extensive and intensive properties and state functions. We should learn first law of thermodynamics which includes internal energy and enthalpy, heat capacity, specific heat capacity, heat measurement in terms of ΔU and ΔH. Hess law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transformation, Ionisation and dilution.
We should also know Introduction of entropy as a state function, free energy change for spontaneous and non spontaneous processes and criterion for application.
Chapter 6: Equilibrium. This is the 6th chapter of Ncert Solutions of Chemistry for 11th. In this chapter we have to study about equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass action, equilibrium constant, factors affecting equilibrium and Le-Chatelier principle. We have also read Ionic equilibrium and Ionisation of acids and bases. Strong and weak electrolytes, degree of ionization, concept of pH and hydrolysis of salts (only elementary idea). We shall also know about buffer solutions, solubility product, common ion effect with illustrative examples.
Chapter 7: Redox Reactions. In this chapter we must know about the concept of oxidation and reduction. Redox reactions with suitable examples. Calculation of oxidation number, balancing of redox reactions and application of redox reactions. Redox reactions and electrode processes.
Chapter 8: Organic chemistry – Some Basic Principles and Techniques. This is the organic part of Ncert Solutions of Chemistry for 11th. Here, we shall learn about general Introduction of organic compounds. Methods of quantitative and qualitative analysis of organic compounds, classification and nomenclature of organic compounds. We should also know about electronic displacement in a covalent bond as inductive effect, electromeric effect, resonance and hyperconjugation. As a reaction mechanism we must know about homolytic and heterolytic fission of a covalent bond which results in free radicals, carbocations, carbanions electrophiles and nucleophiles. Types of organic reactions are also important topic of this chapter.
Chapter 9: Hydrocarbons. We have to read mainly three types of hydrocarbons. Alkanes. Nomenclature of alkanes, isomerism, conformation (ethane only), physical properties, chemical reactions including halogenation, free radical mechanisms, combustion and pyrolysis.
Alkenes. Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation. Important chemical reactions like addition of hydrogen, halogen, water, hydrogen halide illustrating Markovnikov’s rule and peroxide effect, ozonolysis, oxidation and mechanism of electrophilic addition.
Alkynes. Here, we have to read about the nomenclature, structure of triple bond (ethyne), physical properties, methods of preparation, chemical reactions as acidic character of alkynes, adding reaction of hydrogen, halogens, hydrogen halide and water.
Aromatic hydrocarbons. Introduction about aromatic hydrocarbons and their nomenclature, resonance, aromaticity in compounds, chemical properties, mechanism of electrophilic substitution like nitraton, Sulphonation, halogenation, Friedel- Crafts alkylation and acylation. Directive influence of functional group in monosubstituted benzene, carcinogenic effect and toxicity
Conclusion of Ncert Solutions of Chemistry for 11th
Ncert Solutions of Chemistry for 11th is the collection of all the chapters which are valid for the session 2024 – 25 for any board exams. We have provided solutions for all the chapters included in the ncert chemistry book for 11th. The language of the answers has been written very simple and easy. The answer of each questions have been written in proper way that may help the students to do better in the coming exams in future. Some chapters have been excluded from the Syllabus and the answers of these chapters have not been mentioned here. Overall we have given proper attention to overcome the extra burden of students.