NCERT Exemplar Class 11 Chemistry Chapter 12 Solutions: Organic Chemistry – Some Basic Principles and Techniques

NCERT Exemplar Solutions for Class 11 Chemistry Chapter 12 include one of the important parts of Chemistry that can help you score good marks in academic as well as competitive exams. In Chapter 12 of NCERT Class 11 Chemistry Exemplar Solutions, you will be introduced to some basic principles and techniques of organic chemistry. The main topics and sub-topics of the chapter include the Tetravalence of Carbon: Shapes of Organic Compounds, Isomerism, Classification of Organic Compounds, and Methods of Purification of Organic Compounds.

There are 6 exercises with a total of 66 exemplar problems in Chapter 12 – Organic Chemistry – Some Basic Principles and Techniques based on the Structural Representations and Classification of Organic Compounds. These problems will help you to understand the types of questions that can be asked in the exams. The NCERT Exemplar Solutions provided by Instasolv will help you develop a mindset that is required in cracking tough exams.

The solutions of all the NCERT Exemplar Problems for CBSE Class 11 are prepared by our best Chemistry teachers. Our subject matter excerpts have great experience and in-depth knowledge of the subject. So, if you feel stuck while preparing for Chapter 12, then refer to our NCERT Exemplar problems with solutions at any time and from anywhere. Also, you can access all these solutions for free.

Important Topics for NCERT Chemistry Exemplar Solutions Class 11 Chapter 12 – Organic Chemistry – Some Basic Principles and Techniques

Organic Chemistry

Organic chemistry refers to a division of chemistry that illustrates the arrangement, properties, and reactions of organic compounds, which comprises carbon in covalent bonding. The study of structure regulates their chemical composition and formula.

Homologous Series

A series of elements with a similar functional group and identical chemical properties in which the members of the series can be branched or unbranched is known as homologous series.

Nomenclature of Organic Compounds

A technique of organic chemical elements that are suggested by the International Union of Pure and Applied Chemistry (IUPAC) is referred to as the nomenclature of organic compounds.


Isomerism is the occurrence in which more than one element has a similar chemical formula but diverse chemical structures. Chemical compounds that have similar chemical formulae but vary in properties and the structure of atoms in the molecule are known as isomers.


Hyperconjugation refers to the steadying interface that results from the interface of the electrons in an σ-bond (generally C-H or C-C) with an adjacent empty or moderately filled p-orbital or a π-orbital to give a comprehensive molecular orbital that rises the stability of the system.

Quantitative Analysis

The quantitative analysis describes an analysis technique that is used to regulate the number of compounds or molecules created when a chemical reaction takes place. Organic compounds consist of carbon, hydrogen, nitrogen, oxygen, phosphorus, sulphur, and halogens.

Exercise-wise Discussion of NCERT Chemistry Exemplar Solutions Class 11 Chapter 12 – Organic Chemistry – Some Basic Principles and Techniques

Exercise 12.1 – Multiple Choice Questions I

The first exercise of the chapter contains 15 multiple-choice questions based on the important concepts of the chapter. In these exemplar problems, you have to choose the correct answer out of the four options given.

Exercise 12.2 – Multiple Choice Questions II

Exercise 12.2 also contains 7 multiple-choice questions. But these problems are different from that compared to the problems in exercise 12.1.

Exercise 12.3 –Short Answer Types Questions

This exercise has a total of 27 short answer type questions for your reference.

Exercise 12.4 – Match the following

In this exercise, you will find 5 matches the following types of questions. In these questions, more than one correlation is possible between the options of Column I and Column II. You can make as many correlations as you can.

Exercise 12.5 – Assertion and Reason Type

There are a total of 6 exemplar problems in this exercise. In these questions, you have to choose the correct option out of the choices given.

Exercise 12.6 – Long Answer Type Questions

In this exercise, there are a total of 6 long answer type questions. Here, you will find a brief explanation of each question. Practice well to clear your concepts.

Why Use NCERT Chemistry Exemplar Solutions Class 11 Chapter 12 – Organic Chemistry – Some Basic Principles and Techniques by Instasolv?

  • Our NCERT Exemplar Class 11 Chemistry Solutions are updated in exercise-wise which will let you learn all the concepts of the chapter easily.
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  • The solutions provided by us are developed as per the latest guidelines released by NCERT.
  • These solutions will help you prepare better for your CBSE exams as well as entrance exams.
  • We have provided step-by-step solutions of all NCERT Exemplar questions for Class 11 Chemistry Chapter 12 which you can access for free.