Introduction
Class 10 Science Chapter 1 MCQs with Answers | Chemical Reactions and Equations Important Questions
Question 1 of 20
A chemical reaction is characterized by:
Question 2 of 20
Which law is followed while balancing chemical equations?
Question 3 of 20
A balanced chemical equation has:
Question 4 of 20
Combination reaction is a reaction in which:
Question 5 of 20
Which is a combination reaction?
Question 6 of 20
Quicklime is:
Question 7 of 20
Slaked lime is:
Question 8 of 20
Which reaction is used in whitewashing?
Question 9 of 20
Decomposition reactions are opposite to:
Question 10 of 20
Electrolysis of water produces:
Question 11 of 20
During electrolysis of water, the volume ratio of H₂ : O₂ is:
Question 12 of 20
Silver bromide decomposes in presence of:
Question 13 of 20
The reaction 2AgBr → 2Ag + Br₂ is used in:
Question 14 of 20
Reactions that absorb energy are called:
Question 15 of 20
Iron displaces copper from copper sulphate because iron is:
Question 16 of 20
Fe + CuSO₄ → FeSO₄ + Cu is a:
Question 17 of 20
The blue colour of CuSO₄ solution fades because:
Question 18 of 20
A white precipitate of BaSO₄ is formed in:
Question 19 of 20
Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl is a:
Question 20 of 20
The insoluble substance formed during a reaction is called:
This post contains 40 important MCQs from Class 10 Science Chapter 1, “Chemical Reactions and Equations,” based on the NCERT/CBSE syllabus. Each question includes the correct answer and a brief explanation to help students with quick revision and effective exam preparation.
FAQ
Q1. Is Chapter 1 of Class 10 Science important for exams?
Yes, it is one of the most important chapters and frequently appears in CBSE board exams, including MCQs, short-answer, and long-answer questions.
Q2. What is the main topic of this chapter?
The chapter covers chemical reactions, balancing chemical equations, types of chemical reactions, oxidation, reduction, corrosion, and rancidity.
Q3. How can I prepare MCQs quickly?
Revise the definitions, learn the different types of chemical reactions, practice balancing equations, and solve MCQs regularly.
Q4. Are these MCQs useful for board exams?
Yes. These MCQs are based on the NCERT textbook and follow the latest CBSE exam pattern.
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Class 10 Science Chapter 1 MCQs
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Class 10 Science Chapter 1 MCQs with Answers | Chemical Reactions
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Download important Class 10 Science Chapter 1 MCQs with answers and explanations. Based on NCERT Chemical Reactions and Equations for quick exam revision.
Thanks for these useful Class 10 MCQs with explanations.”