NCERT Solutions for Class 11 Chemistry Chapter 13 – Hydrocarbons

NCERT Solutions for Class 11 Chemistry Chapter 13 Hydrocarbons will help clear all your doubts on the questions that arise during your studies and revision of this chapter of NCERT Solutions for Class 11. In this chapter, you will be learning about the different concepts of Hydrocarbons. The important topics encircling this chapter are Classifications, Structure of Double Bond and the Structure of Triple Bond amongst others. You will also learn about the Nomenclature, Isomerism, preparation, properties and conformations of Alkanes, Alkenes, Alkynes and Aromatic Hydrocarbon in this chapter. Carcinogenicity and toxicity is another important concept that you’ll come across while studying this important chapter of the class 11 chemistry subject.

NCERT Solution, for Class 11 Chemistry Chapter 13 Hydrocarbons, has a total of 25 questions at the end of the chapter. The questions cover the most significant topics of the chapter. The solutions of all the NCERT textbook questions are provided to you here in a simplified format that has been designed by the subject matter experts at Instasolv. All the solutions provided in it have been prepared by keeping in mind the CBSE Board exam format.

The Hydrocarbons have been designed to make your self-learning experience an easy one. We understand that it is typical that you go over each concept in detail to revise that overtime to make sure that you must cover each and every topic of this chapter. This is why our NCERT solutions can help you revise the whole chapter quickly. We have prepared unique solutions which not only ensure higher understanding but also aim at helping you achieve greater results through simplified learning.

Topics Covered in NCERT Solutions for Class 11 Chemistry Chapter 13- Hydrocarbons

CBSE Class 11 NCERT Solutions for Chemistry Chapter 13 Hydrocarbons is an essential chapter from the academic perspective. This chapter holds a significant weightage in your internal as well as final exams. In this chapter, in addition to all important concepts taught, remembering Nomenclature, Isomerism, Preparation, Properties and Conformations remain the most important elements. Here are some of the most important terms of the chapter that will help you brush up your concepts.


Hydrocarbons are organic compounds that consist of Carbon and Hydrogen only. 

Hydrocarbons are classified into two types- open-chain compounds and cyclic compounds. Examples of hydrocarbons include Alkanes, Alkenes and Alkynes, etc.


Alkanes are open-chain compounds that contain carbon-carbon single bonds. These hydrocarbons don’t react with acids, bases or other regents under the normal conditions. Alkanes are prepared by soda-lime, from the hydrogenation of Alkenes and Alkynes, reduction of alkyl halides, Kolbe’s electrolysis, Clemmensen’s reduction, compounds containing oxygen, Wolff-Kishnerts reduction, Corey-House synthesis and by Wurtz reaction. Alkanes exhibit the conformational, position and chain isomerism.

 Chemical Properties of Alkanes

  • Combustion. 
  • Controlled Oxidation. 
  • Isomerism. 
  • Aromatisation. 
  • Reaction with Steam. 
  • Nitration. 
  • Sulphonation. 
  • Pyrolysis. 
  • Halogenation: Bromination, Iodination and Chlorination.


Alkenes are the hydrocarbons that have the presence of a double bond between the carbon atoms (C=C). Alkenes are also called olefins. The isomerism of Alkenes consists of the structural and geometrical isomerism. Alkenes can be prepared in various ways namely, from Alkyl Halide, Alkynes, Alcohols by Acidic Dehydrogenation and Vicinal dihalides.

Chemical Properties of Alkenes

  • Addition of Sulphuric Acid. 
  • Addition of Water. 
  • Addition of Halogens. 
  • Oxidation. 
  • Ozonolysis. 
  • Polymerisation. 
  • Substitution Reactions.


These are hydrocarbons that are unsaturated in nature. The position of triple bond is determined by ozone in Alkynes. Alkynes can be prepared from vicinal dihalides, calcium carbide and tetrahalides.

Chemical Properties of Alkynes

  • Electrophilic addition reactions. 
  • Acidic character of alkyne. 
  • Addition of halogens. 
  • Addition of water. 
  • Cyclic polymerisation. 
  • Oxidation. 
  • Ozonolysis. 
  • Linear polymerization.


Benzene is a highly unsaturated compound. According to Kekule, the cyclic planar structure of benzene is six carbons with the alternate double and alternate single bonds. The preparation of benzene includes heating phenol with zinc dust, bypassing acetylene through the red-hot tube at 500 degrees Celsius and by the decarboxylation. The chemical properties of benzene include electrophilic substitution reaction and addition reaction.

The electrophilic substitution reaction includes nitration, halogenation, sulphonation and Friedel-crafts alkylation reaction. Ensure preparing all the equations of the preparations in addition to the IUPAC names as they are crucial from the examination’s perspective.

Exercise-wise Discussion of NCERT Solutions for Class 11 Chemistry Chapter 13 – Hydrocarbons

  • The NCERT Solutions for Class 11 Chemistry Chapter 13 Hydrocarbons provided by us cover all 25 questions of this chapter.  
  • This chapter has only one exercise at the end. 
  • All questions are descriptive and so do they aim at helping you to attain a better understanding of the concepts of Hydrocarbons. 
  • The questions in the exercise are structured to draw out information on the different steps and mechanisms of various chemical processes related to hydrocarbons, the IUPAC names of compounds, conversions, conditions and justifications, etc. 
  • The 13 Hydrocarbons will prove useful for you while you prepare extensively for CBSE exams and various other entrance examinations such as JEE and NEET.

Benefits of NCERT Solutions for Class 11 Chemistry Chapter 13 by Instasolv

Instasolv focuses on learning by emphasizing the requisites of the CBSE Class 11 syllabus. All NCERT Solutions for Class 11 Chemistry Chapter 13 provided to you will ensure faster learning as they are written in easy to understand language. The solutions have been prepared by skilled professionals who have been working in this field for years. A lot of in-depth research is dedicated to the preparation of all these NCERT solutions so that the content does not overlook even the smallest of the concept pertaining to this chapter.

Each NCERT solution provided is comprehensive with all the relevant reasoning and steps that make a perfect CBSE answer for you. While preparing, ensure that you have mastered all the theorems and concepts to understand the methodology used in the solutions to attain the best score in class 11 chemistry subject. You can do that with the best efforts.