Last Updated on May 17, 2025 by XAM CONTENT
Understanding the key concepts of Class 10 Science Chapter 1 – Chemical Reactions and Equations is crucial for exam success. To make your revision easier, we have created chapterwise mcq questions with Answers for class 10 Science based on the latest syllabus and exam pattern. It is a part of MCQ Questions for CBSE Class 10 Science Series.
These multiple-choice questions will help you assess your knowledge, improve accuracy, and boost confidence for your exams. Whether you are preparing for school tests, online tests or competitive exams, these Chemical Reactions and Equations MCQs will strengthen your conceptual clarity.
| Chapter | Chemical Reactions and Equations |
| Book | Science Textbook for Class 10 |
| Type of Questions | MCQ Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 10 |
| Subject | Science |
| Useful for | Class 10 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 10 Science Chapterwise MCQ Questions |
MCQ Questions on Chemical Reactions and Equations Class 10 Science (PDF Download)
MCQs
Q1. When iron nails are dipped in copper sulphate solution, the blue color fades and brown coating is seen on iron. This is because:
(a) Iron is more reactive than copper
(b) Copper is more reactive than iron
(c) Iron and copper are equally reactive
(d) No reaction occurs
Show Answer
Answer: (a)
Explanation: Iron displaces copper due to higher reactivity.
Q2. The chemical reaction 2AgCl → 2Ag + Cl₂ is used in black-and-white photography. What type of reaction is this?
(a) Combination
(b) Decomposition
(c) Displacement
(d) Double Displacement
Show Answer
Answer: (b)
Explanation: Silver chloride breaks into silver and chlorine in light.
Q3. Which of the following reactions is both a redox and displacement reaction?
(a) CaCO₃ → CaO + CO₂
(b) Zn + CuSO₄ → ZnSO₄ + Cu
(c) NaOH + HCl → NaCl + H₂O
(d) AgNO₃ + NaCl → AgCl + NaNO₃
Show Answer
Answer: (b)
Explanation: Zinc is oxidized and copper is reduced.
Q4. What will happen if a solution of sodium sulphate is mixed with barium chloride?
(a) No reaction
(b) Gas is evolved
(c) White precipitate forms
(d) Blue solution forms
Show Answer
Answer: (c)
Explanation: BaSO₄ forms as a white precipitate.
Q5. Identify the reaction: 3Fe + 4H₂O → Fe₃O₄ + 4H₂
(a) Combination reaction
(b) Thermal decomposition
(c) Redox reaction
(d) Precipitation reaction
Show Answer
Answer: (c)
Explanation: Fe is oxidized and H₂O is reduced.
Q6. Respiration is considered as:
(a) Endothermic and synthesis
(b) Exothermic and decomposition
(c) Exothermic and oxidation
(d) Endothermic and redox
Show Answer
Answer: (c)
Explanation: Glucose is oxidized and energy is released.
Q7. Which of the following shows a double displacement and precipitation reaction?
(a) Zn + HCl → ZnCl₂ + H₂
(b) Na₂SO₄ + BaCl₂ → BaSO₄ + 2NaCl
(c) C + O₂ → CO₂
(d) AgNO₃ + Cu → Cu(NO₃)₂ + Ag
Show Answer
Answer: (b)
Explanation: BaSO₄ precipitates in a double displacement.
Q8. Why does zinc react with dilute sulphuric acid to form hydrogen gas?
(a) It is a redox reaction
(b) It is a double displacement reaction
(c) Zinc is more reactive than hydrogen
(d) Both (a) and (c)
Show Answer
Answer: (d)
Explanation: Zinc displaces hydrogen ions and is oxidized.
Q9. Which statement is correct regarding the reaction: CuO + H₂ → Cu + H₂O?
(a) Hydrogen is reduced
(b) Hydrogen is oxidized
(c) Copper is oxidized
(d) Water is oxidized
Show Answer
Answer: (b)
Explanation: Hydrogen gains oxygen to form water.
Q10. Which of the following is not an exothermic reaction?
(a) Burning of coal
(b) Neutralisation reaction
(c) Electrolysis of water
(d) Respiration
Show Answer
Answer: (c)
Explanation: Electrolysis requires input of energy.
Q11. Which of the following observations indicates a chemical reaction?
(a) Melting of ice
(b) Dissolving sugar in water
(c) Evolution of gas on mixing two liquids
(d) Boiling of water
Show Answer
Answer: (c)
Explanation: Gas evolution is evidence of chemical change.
Q12. What is observed when a magnesium ribbon is burned in air?
(a) A black solid is formed
(b) White dazzling flame and white powder
(c) Brown gas is released
(d) No visible change
Show Answer
Answer: (b)
Explanation: Magnesium burns to form white magnesium oxide.
Q13. Which chemical change is not an example of a redox reaction?
(a) Zn + CuSO₄ → ZnSO₄ + Cu
(b) NaOH + HCl → NaCl + H₂O
(c) CuO + H₂ → Cu + H₂O
(d) Fe₂O₃ + 2Al → 2Fe + Al₂O₃
Show Answer
Answer: (b)
Explanation: Neutralisation is not redox.
Q14. Which process is responsible for black coating on silver ornaments kept in open air?
(a) Corrosion
(b) Rancidity
(c) Sublimation
(d) Reduction
Show Answer
Answer: (a)
Explanation: Reaction with air (oxidation) causes corrosion.
Q15. Which of the following correctly defines rancidity?
(a) Oxidation of metals
(b) Oxidation of fats and oils
(c) Reduction of food
(d) Fermentation of glucose
Show Answer
Answer: (b)
Explanation: Rancidity is oxidation of fats and oils.
Q16. Identify the decomposition reaction among the following:
(a) 2H₂ + O₂ → 2H₂O
(b) 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂
(c) Fe + CuSO₄ → FeSO₄ + Cu
(d) AgNO₃ + NaCl → AgCl + NaNO₃
Show Answer
Answer: (b)
Explanation: One reactant breaks into multiple products.
Q17. In the reaction Zn + H₂SO₄ → ZnSO₄ + H₂, what happens to zinc?
(a) It is reduced
(b) It is oxidized
(c) No change
(d) It evaporates
Show Answer
Answer: (b)
Explanation: Zinc loses electrons and is oxidized.
Q18. The brown colour of iron nail after reaction with copper sulphate is due to:
(a) Iron sulphide
(b) Iron oxide
(c) Deposited copper
(d) Copper oxide
Show Answer
Answer: (c)
Explanation: Copper gets displaced and deposited.
Q19. Which reaction represents an endothermic process?
(a) Respiration
(b) Burning of LPG
(c) Electrolysis of water
(d) Neutralization
Show Answer
Answer: (c)
Explanation: Energy is absorbed to split water.
Q20. Which of the following is not true for a chemical equation?
(a) It must be balanced
(b) It should show physical states
(c) It should include catalyst used
(d) It should always be a displacement reaction
Show Answer
Answer: (d)
Explanation: Equations can represent all types, not just displacement.
We hope the given mcq questions with Answers for Chemical Reactions and Equations Class 10 helps you in your learning.
Also check
- Metals and Non-metals – Class 10 Science Chapter 3 MCQ Questions with Answers (Updated)
- Acids, Bases and Salts – Class 10 Science Chapter 2 MCQ Questions with Answers (Updated)
- Chemical Reactions and Equations – Class 10 Science Chapter 1 MCQ Questions with Answers (Updated)
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Topics from which mcq questions may be asked
- Types of chemical reactions
- Balancing equations
- Applications in daily life
Chemistry begins with reactions—it explains changes around us every day.
Frequently Asked Questions (FAQs) on Chemical Reactions and Equations MCQ Questions
Q1: Why should I practice Class 10 Science Chapter 1 MCQs?
A1: Practicing MCQs helps in quick revision, improves problem-solving speed, and enhances conceptual understanding of important topics in Class 10 Science.
Q2: Are these Class 10 Science MCQs based on the latest syllabus?
A2: Yes, all the MCQs are designed as per the latest CBSE syllabus and exam pattern to help students prepare effectively.
Q3: Where can I find more MCQs for Class 10 Science?
A3: You can find more chapter-wise MCQs on our website. These are designed to cover important concepts and prepare you for exams.
Q4: Are the answers provided for all MCQs?
A4: Yes, each MCQ is accompanied by the correct answer and explanations to help students understand and learn better.
Q5: How can I improve my performance in Class 10 Science MCQs?
A5: To improve your performance, practice regularly, revise key concepts, and take mock tests to assess your knowledge.
Q6: Do these MCQs help in school exams?
A6: Yes, these MCQs are aligned with school exam patterns and help in scoring well by strengthening conceptual clarity.
Q7: Can I download these MCQs for offline practice?
A7: Yes, you can download or print these MCQs for convenient offline practice.
Q8: Are there any resources available online for students to practice mcq questions on class 10 science chapter 1 “Chemical Reactions and Equations“ for CBSE exams?
A6: Yes, several educational websites offer mcq questions for CBSE students preparing for science examinations. We also offer a collection of mcq questions for all classes and subject on our website. Visit our website to access these questions and enhance your learning experience. for more mcq, you can also visit Physics Gurukul Website.
