NCERT Solutions For Class 10 Science Chapter 1 Chemical Reactions and Equations

Science Chapter 1 Class 10 – Quick Overview on Chemical Reaction and Equations

Chapter 1 of Class 10 Science – Chemical Reactions and Equations is an essential chapter for students because it introduces the basic concepts of chemical reactions, classification of reactions, and writing and balancing chemical equations. Many students die a thousand deaths while trying to memorise reaction types or balancing equations. To tackle this, NCERT Solutions for Class 10 Science Chapter 1 are prepared by ToppersSky experts aligned with the latest Class 10 Science syllabus, and they come with clear and accurate explanations for every question.

These Class 10 Science Chapter 1 question-and-answer solutions are exhaustive, as they cover all NCERT exercise questions, and they explain significant ideas like combination, decomposition, displacement, and redox reactions in a very straightforward, gradual manner. As a result, this makes it easier to learn and enables students to revise with the utmost efficiency.

Whether students are identifying compounds, describing different types of reactions, or solving mathematical problems, the NCERT Solutions for Class 10 Chemistry Chapter 1 will always provide thorough and clear assistance. In addition, the ToppersSky application allows students to get the Class 10 Science Chapter 1 PDF for a quick review and a handy reference before the tests.

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Important Topics Covered in Class 10 Science Chapter 1

Topics of Chemical Reaction and Equation	Subtopics of Chemical Reaction and Equation
Chemical Equations	Writing a Chemical Equation Balanced Chemical Equations
Types of Chemical Reactions	Combination Reaction Decomposition Reaction Displacement Reaction Oxidation and Reduction
Effects of Oxidation Reactions in Everyday Life	Corrosion Rancidity

Significant Topics Discussed in Class 10 Science Chapter 1

Class 10 Science Chapter 1 – Chemical Reactions and Equations has many topics that are very important regarding exams. The main ideas of the chapter are discussed below:

Chemical Reactions Types

• Combination Reactions: Many substances react together and the result is one product.
• Decomposition Reactions: A compound is said to be decomposed when it yields several elements or simpler compounds through the process of breaking down.
• Displacement Reactions: The method in which an element or ion present in a compound is substituted with another element or ion from another compound.
• Single Displacement Reactions: The more reactive species will continually take the place of the less reactive one in any situation.
• Double Displacement Reactions: The exchange of atoms or ions between the two different compounds leads to the creation of a new compound.
• Oxidation and Reduction Reactions: The term “redox” is often used interchangeably with such reactions; loss of electrons is termed oxidation, and gain of electrons is called reduction.
• Corrosion and Rancidity: The handling of metal corrosion, food rancidity, and the techniques for prevention.

Advantages of Utilization of NCERT Solutions for Class 10 Science Chapter 1

NCERT Solutions for Class 10 Science Chapter 1 use the following advantages for students:

• It aids the students in gaining a clear understanding of how to balance the different types of chemical equations.
• It minimizes the difficulty of writing and framing the chemical equations accurately.
• It provides the step-by-step explanation of each question according to the exam pattern.
• It includes the practice papers of varied difficulty levels to help the students prepare for the board exams with full confidence.
• Such an NCERT Solution for Class 10 Science Chapter 1 facilitates the students to solidify their understanding and learn-through-revision just before the exams.

Conclusion

The solutions provided for class 10 science chapter 1- chemical reactions and equations are not only very simple but also very clear and comprehensive. All the major concepts directly related to chemical reactions and equations are covered. Additionally, solutions are thorough and fully updated according to the exam pattern, thus they are very reliable for preparation for the examination.

As NCERT Class 10 Science Chapter 1 covers a lot of new and important topics, it could be a bit tough at the beginning. However, NCERT Solutions for Class 10 Science Chapter 1 prepared by ToppersSky experts will be there to support with their step-wise explanations and various points focusing on the examination. This practice resource is perfect for the students to overcome their difficulties, and to score more in the exams.

NCERT Exercise Questions and Solutions

Q1. What do you mean by chemical reaction? Give an example to illustrate your point.

Answer: A chemical reaction is a transformation of matter involving the change of properties and the formation of new substances.
Example:
Magnesium oxide is obtained by the reaction of magnesium and oxygen.
Equation:
2Mg + O₂ → 2MgO

Q2. What is the reason for balancing a chemical equation?

Answer: To meet the law of conservation of mass which states that nothing can be created or destroyed during a chemical reaction resulting in the whole atoms count of the elements being equal on both sides of the equation.

Q3. Balance the chemical equation given below:

Fe + H₂O → Fe₃O₄ + H₂

Answer: The equation is now balanced:
3Fe + 4H₂O → Fe₃O₄ + 4H₂

Q4. Write the balanced chemical equation for zinc and dilute hydrochloric acid reaction.

Answer: Zn + 2HCl → ZnCl₂ + H₂

Q5. What type of reaction is it?

CaO + H₂O → Ca(OH)₂

Answer: This reaction can be termed a combination reaction since it involves the merging of two reactants to yield one product.

Q6. What is a displacement reaction? Give one example.

Answer: A displacement reaction refers to a process wherein a more powerful element drives the less powerful one out of its compound.
For instance:
Zn + CuSO₄ → ZnSO₄ + Cu

Q7. Define oxidation and reduction.

Answer:  Oxidation: Oxidation is an increase in oxygen or a decrease in hydrogen.

Reduction: refers to a decrease in oxygen or an increase in hydrogen.

They both take place simultaneously in a chemical reaction and are referred to as redox reactions.

Q8. Corrosion should be defined. Name one instance.

Answer: Corrosion refers to the slow process through which metals lose their quality due to their contact with both air and water. A very good example of corrosion is the rusting of iron.

Q9. Rancidity, what is it? How can it be stopped?

Answer: Rancidity is a process wherein fats and oils lose their quality and safety due to oxidation, thus emitting an unpleasant smell and taste. And storing them in vacuum-sealed containers, adding antioxidants, and refrigeration can prevent rancidity.

Q10. Write the balanced chemical equation for the thermal decomposition of calcium carbonate.

Answer: CaCO₃ → CaO + CO₂

Chapter-wise NCERT Solutions Class 10 Science

FAQs

1. Is Chapter 1 “Chemical Reactions and Equations” an essential topic for board exam?

Definitely, Chapter 1 not only encompasses a crucial portion of Class 10 Science but also throws light on the basic concepts such as the balancing of equations, types of reaction, and corrosion, and so they are among the frequently asked topics in the board exams and internal assessments.

2. Is it only NCERT Solutions that can fetch the students full marks in Chapter 1 Science Class 10?

Only through NCERT Sols, students can get great help in scoring high as they are a comprehensive coverage of all the textbook queries along with their thorough practice. Candidates should pay special attention to numbers, chemical equations, and definitions if they wish to score well.

3. What types of chemical reactions should students focus on for exams?

The reactions mainly considered are as follows:

1. Combination reactions
2. Decomposition reactions
3. Replacement reactions and double replacement reactions
4. Oxidation and reduction (redox reactions)
   These topics are very much related to the exam and they often occur in the 2–5 mark questions.

4. Students often consider that it is hard to perform balancing of chemical equations, but how does NCERT Solutions help?

The issue with the balancing of equations is mainly due to more than one element and the use of coefficients. NCERT Solutions definitely make the learning process easier for the students by imparting a clear explanation of each step and thus the students learn the logical process and also the reason behind the occurrence of common errors in the exams.

5. Are NCERT Solutions for Class 10 Science Chapter 1 in line with the 2025–26 syllabus and up to date?

Certainly, the NCERT Solutions for Class 10 Science Chapter 1 are completely overhauled and are in sync with the 2025–26 syllabus, thereby providing correct explanations, exam-oriented content and making it clearer for the students to prepare effectively.