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NCERT Solutions Class 10 Science Chapter 1 Chemical Reaction And Equation - PDF Download

JEE Mains & Advanced

NCERT solutions for class 10 science chapter 1 chemical reaction and equation is the best study resource required for class 10 students who want to perform well in their board exam. It is very important that the students study using NCERT solutions to understand the kind of questions asked in this chapter, chemical reaction and equations.

Chapter 1 is all about how to write chemical equations and how to balance them. In this chapter, you'll also learn about chemical reactions, their different types, and how a chemical oxidation reaction affects us in everyday life. Here, you'll get an idea of what's going on in the chapter and how to write and balance chemical equations. Chemical Reactions and Equation is a very basic chapter that deals with fundamental concepts of chemical reactions. Students are recommended to focus on this chapter in order to avoid any difficulties in understanding more complex topics of chemistry. If you are planning to study science in your higher secondary classes, then this chapter is one of the most important chapters that you need to remember for a long time.

NCERT Solutions for Class 10 Science Chapter 1 Sections

Section Name

Topic Name


Chemical Reactions and Equations


Chemical Equations


Types of Chemical Reactions


Have you observed the effects of oxidation reactions in everyday life?

1.1 Chemical Equations: A chemical equation describes a chemical reaction using chemical formulas and symbols. A chemical equation describes the reactants, the products, and the proportions of the reactants and products in a reaction. A chemical equation provides a short description of a reaction, including the substances involved and the relative quantities.

Following are the subtopics covered in section 1.1 Chemical Equations:

     1.1.1 Writing a Chemical Equation

     1.1.2 Balanced Chemical Equation

1.2 Types of Chemical Reactions: You are introduced to various types of chemical reactions. Reactions are classified according to how they modify the structure and bonding of the atoms in reactants, resulting in the creation of new substances.

Following are the subtopics covered in section 1.2 Types of Chemical Reactions:

     1.2.1 Combination Reaction

     1.2.2 Decomposition Reaction

     1.2.3 Displacement Reaction

     1.2.4 Double Displacement Reaction

1.3 Have You Observed the Effects of Oxidation Reactions in Everyday Life?: Oxidation reactions play an important role in daily life and are involved in many different processes and events.

Following are the subtopics covered in section 1.3 Have You Observed the Effects of Oxidation Reactions in Everyday Life?:

     1.3.1 Corrosion

      1.3.2 Rancidity

Key Features of Class 10 Science Chapter 1

  • Chemical reactions are the process of transforming substances into new, distinct substances with varying characteristics. The initial substances are called reactants, and the resulting substances are called products. Chemical reactions play an important role in a variety of natural and industrial processes.

  • Chemical equations are chemical formulas and symbols used to represent chemical reactions.They are a simple way to communicate important information about a reaction. On the left-hand side, reactants are written, and on the right-hand side, products are written, separated by an (→).

  • In order to apply the conservation of mass, chemical equations must be balanced. Balancing is the process of adjusting the coefficients so that each type of atom has the same number on each side of the equation. There are no substituents to balance equations.

  • A combination reaction is a reaction in which two or more substances are combined to create a new compound. A decomposition reaction occurs when a single compound is broken down into simpler compounds. A single displacement reaction occurs when one element of a compound is displaced from another compound. A double displacement reaction occurs when two compounds undergo ion exchange between each other. A neutralization reaction occurs when an acid reacts to a base to yield salt or water. A redox reaction occurs when electrons are transferred between reactants during oxidation.

  • A catalyst is a substance that accelerates a chemical reaction without being consumed in the reaction. Catalyst reduces the amount of energy needed for the reaction to take place.

Benefits of Downloading the PDF of NCERT Solutions Class 10 Science Chapter 1 Chemical Reactions and Equations

The advantages of downloading the PDF of the NCERT solutions for class 10 science chapter 1 “Chemical reactions and Equations” include:

Easy access: Once you download the PDF files, you can open them on your computer or tablet, even if you don’t have an internet connection.

Offline study: The solutions can be studied offline, which can be especially useful when you are not connected to the internet and don’t want to save data.

Printability: If you would prefer to study from a physical copy, you can print out the PDFs and have a physical copy for reference.

Detailed solutions: The PDFs often include step by step explanations, which can help you understand the concepts better and solve problems more easily.

Multiple revisions: PDFs can be revised multiple times, without worrying about the wear and tear on the physical pages

Saves time: The PDF can be opened on your device quickly, which is much faster than searching for solutions in a book.

Frequently Asked Questions

Question 1: What is the law of conservation of mass?

Answer 1: The conservation of mass refers to the fact that mass is not produced or lost during the chemical reaction. Therefore, the total weight of reactants equals the total weight of products.

Question 2: Why are chemical equations important?

Answer 2: Chemical equations are symbolic representations of a chemical reaction, which explain the reactants and products, the stoichiometrics of the reaction, and the conservation of mass.



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