CBSE Class 10 Science MCQs Chapter 1 Chemical Reactions and Equations with Answers

In this article, we present multiple-choice questions (MCQs) based on Chapter 1 of the NCERT Class 10 Science book. These questions cover the essential concepts of chemical reactions and equations, helping students understand the key ideas of how chemical reactions work and their practical applications. By practicing these MCQs, students can test their knowledge and strengthen their understanding of this important chapter, ultimately improving their performance in the subject.

This set of MCQ questions for Class 10 Science Chemistry Chapter 1 challenges students to apply their knowledge of chemical reactions, a fundamental topic in Class 10 science. These MCQs are designed to assess your grasp of the concepts, making them an ideal resource for students preparing for exams. Whether you’re revising for an upcoming test or looking to deepen your understanding of chemical reactions, these questions will guide you through the basic principles behind chemical changes and how they impact our daily lives.

These MCQs on Chapter 1 Class 10 Science cover a wide range of topics, from balancing chemical equations to understanding different types of chemical reactions. Practicing these Class 10 Science Chapter 1 MCQs will not only enhance your grasp of the chapter but also provide you with a better understanding of how chemical reactions play a vital role in various processes.

Whether you refer to them as Class 10 Ch 1 Science MCQ, MCQ Chapter 1 Class 10 Science, or Class 10 Science Ch 1 MCQ, the objective remains the same: to help you succeed in your exams. Start practicing now and master the basics of chemical reactions with these carefully crafted questions.

These questions will help you prepare for both theoretical and practical applications, ensuring that you have a well-rounded understanding of the chapter.

Class 10 Science MCQs – Chapter 1 Chemical Reactions and Equations

Question: Which of the following is not a chemical change?

1. Burning of paper
2. Melting of ice
3. Rusting of iron
4. Digestion of food

Answer: b) Melting of ice

Question: In a chemical reaction, the substances before the reaction are called:

1. Reactants
2. Products
3. Elements
4. Compounds

Answer: a) Reactants

Question: Which of the following is a balanced chemical equation?

1. H₂ + O₂ → H₂O
2. Fe + O₂ → Fe₂O₃
3. CaCO₃ → CaO + CO₂
4. HCl + NaOH → NaCl + H₂O

Answer: d) HCl + NaOH → NaCl + H₂O

Question: What type of reaction is represented by the equation: 2H₂ + O₂ → 2H₂O?

1. Combination reaction
2. Decomposition reaction
3. Displacement reaction
4. Double displacement reaction

Answer: a) Combination reaction

Question: Which of the following is a decomposition reaction?

1. 2H₂O → 2H₂ + O₂
2. 2Na + Cl₂ → 2NaCl
3. CaCO₃ → CaO + CO₂
4. AgNO₃ + NaCl → AgCl + NaNO₃

Answer: c) CaCO₃ → CaO + CO₂

Question: What is the product of the reaction between magnesium (Mg) and hydrochloric acid (HCl)?

1. Mg(OH)₂ + H₂
2. MgCl₂ + H₂
3. MgO + H₂O
4. MgCO₃ + H₂

Answer: b) MgCl₂ + H₂

Question: What happens to the mass during a chemical reaction?

1. It increases
2. It decreases
3. It remains the same
4. It varies

Answer: c) It remains the same

Question: Which of the following statements is true about exothermic reactions?

1. They absorb heat
2. They release heat
3. They occur at low temperatures
4. They require energy input

Answer: b) They release heat

Question: Which of the following represents a single displacement reaction?

1. FeS + 2HCl → FeCl₂ + H₂S
2. Na₂SO₄ + BaCl₂ → 2NaCl + BaSO₄
3. 2H₂O → 2H₂ + O₂
4. 2AgNO₃ + Zn → Zn(NO₃)₂ + 2Ag

Answer: d) 2AgNO₃ + Zn → Zn(NO₃)₂ + 2Ag

Question: What is the product of the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl)?

1. NaCl + H₂O
2. NaOH + HCl
3. Na₂Cl + H₂O
4. NaOH + H₂

Answer: a) NaCl + H₂O

Question: What is the product of the reaction between magnesium (Mg) and hydrochloric acid (HCl)?

• a) Mg(OH)2 + H2
• b) MgCl2 + H2
• c) MgO + H2O
• d) MgCO3 + H2

Answer: b) MgCl2 + H2

Question: What happens to the mass during a chemical reaction?

• a) It increases
• b) It decreases
• c) It remains the same
• d) It varies

Answer: c) It remains the same

Question: Which of the following statements is true about exothermic reactions?

• a) They absorb heat
• b) They release heat
• c) They occur at low temperatures
• d) They require energy input

Answer: b) They release heat

Question: Which of the following represents a single displacement reaction?

• a) FeS + 2HCl → FeCl2 + H2S
• b) Na2SO4 + BaCl2 → 2NaCl + BaSO4
• c) 2H2O → 2H2 + O2
• d) 2AgNO3 + Zn → Zn(NO3)2 + 2Ag

Answer: d) 2AgNO3 + Zn → Zn(NO3)2 + 2Ag

Question: What is the product of the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl)?

• a) NaCl + H2O
• b) NaOH + HCl
• c) Na2Cl + H2O
• d) NaOH + H2

Answer: a) NaCl + H2O

Question: Which gas is evolved when zinc metal reacts with dilute sulfuric acid (H2SO4)?

• a) Oxygen
• b) Hydrogen
• c) Carbon dioxide
• d) Sulfur dioxide

Answer: b) Hydrogen

Question: What is the general formula for a neutralization reaction?

• a) Acid + Metal → Salt + Hydrogen gas
• b) Acid + Metal Oxide → Salt + Water
• c) Acid + Base → Salt + Water
• d) Acid + Carbonate → Salt + Water + Carbon dioxide

Answer: c) Acid + Base → Salt + Water

Question: What is the product formed when copper (II) oxide reacts with sulfuric acid (H2SO4)?

• a) CuSO4 + H2O
• b) Cu(OH)2 + H2O
• c) CuSO4 + O2
• d) CuO + H2O

Answer: a) CuSO4 + H2O

Question: What is the chemical formula of sodium chloride?

• a) NaCl
• b) Na2Cl
• c) NaCl2
• d) Na2Cl2

Answer: a) NaCl

Question: Which of the following statements is true about combustion reactions?

• a) They involve the reaction of a metal with an acid
• b) They involve the reaction of a non-metal with oxygen
• c) They involve the reaction of a base with an acid
• d) They involve the reaction of an acid with a carbonate

Answer: b) They involve the reaction of a non-metal with oxygen

What type of reaction is represented by the equation: 2Na + Cl₂ → 2NaCl?

• a) Combination reaction
• b) Decomposition reaction
• c) Displacement reaction
• d) Double displacement reaction

Answer: c) Displacement reaction

What is the chemical formula of sulfur dioxide?

• a) SO₂
• b) SO₃
• c) H₂SO₄
• d) H₂SO₃

Answer: a) SO₂

Which of the following is an example of a redox reaction?

• a) CaCO₃ → CaO + CO₂
• b) 2Na + Cl₂ → 2NaCl
• c) Fe + S → FeS
• d) Zn + 2HCl → ZnCl₂ + H₂

Answer: d) Zn + 2HCl → ZnCl₂ + H₂

Question: What type of reaction is represented by the equation: CH₄ + 2O₂ → CO₂ + 2H₂O?

• a) Combination reaction
• b) Decomposition reaction
• c) Displacement reaction
• d) Combustion reaction

Answer: d) Combustion reaction

Question: What is the product formed when sodium carbonate (Na₂CO₃) reacts with hydrochloric acid (HCl)?

• a) NaCl + CO₂
• b) NaCl + H₂O + CO₂
• c) Na₂Cl + H₂O + CO₂
• d) NaHCO₃ + Cl₂

Answer: b) NaCl + H₂O + CO₂

Question: Which of the following is an example of a synthesis reaction?

• a) CH₄ + 2O₂ → CO₂ + 2H₂O
• b) CaCO₃ → CaO + CO₂
• c) 2H₂O → 2H₂ + O₂
• d) 2H₂ + O₂ → 2H₂O

Answer: a) CH₄ + 2O₂ → CO₂ + 2H₂O

Question: What is the product of the reaction between magnesium oxide (MgO) and hydrochloric acid (HCl)?

• a) MgCl₂ + H₂
• b) Mg(OH)₂ + HCl
• c) MgCl₂ + H₂O
• d) Mg(OH)₂ + H₂O

Answer: c) MgCl₂ + H₂O

Question: What is the chemical formula of calcium oxide?

• a) CaO
• b) Ca(OH)₂
• c) CaCO₃
• d) CaSO₄

Answer: a) CaO

Question: Which gas is produced when zinc carbonate (ZnCO₃) decomposes upon heating?

• a) Oxygen
• b) Hydrogen
• c) Carbon dioxide
• d) Sulfur dioxide

Answer: c) Carbon dioxide

Question: What is the product formed when sulfur dioxide (SO₂) reacts with water (H₂O)?

• a) H₂SO₄
• b) H₂SO₃
• c) H₂S
• d) H₂O₂

Answer: b) H₂SO₃

Question: Which of the following is an example of a precipitation reaction?

• a) 2Na + Cl₂ → 2NaCl
• b) CaCO₃ → CaO + CO₂
• c) Na₂SO₄ + BaCl₂ → 2NaCl + BaSO₄
• d) 2H₂O → 2H₂ + O₂

Answer: c) Na₂SO₄ + BaCl₂ → 2NaCl + BaSO₄

Question: What is the product formed when hydrogen peroxide (H₂O₂) decomposes?

• a) H₂O
• b) O₂
• c) H₂O + O₂
• d) H₂ + O₂

Answer: c) H₂O + O₂

Question: What is the chemical formula of hydrochloric acid?

• a) HCl
• b) H₂SO₄
• c) HNO₃
• d) H₂O₂

Answer: a) HCl

Question: Which of the following is an example of a neutralization reaction?

• a) CaCO₃ → CaO + CO₂
• b) 2Na + Cl₂ → 2NaCl
• c) HCl + NaOH → NaCl + H₂O
• d) 2H₂O → 2H₂ + O₂

Answer: c) HCl + NaOH → NaCl + H₂O

Question: What is the product formed when potassium hydroxide (KOH) reacts with sulfuric acid (H₂SO₄)?

• a) K₂SO₄ + H₂O
• b) K₂SO₄ + H₂SO₄
• c) KOH + H₂SO₄
• d) KHSO₄ + H₂O

Answer: a) K₂SO₄ + H₂O

MCQ Questions for Class 10 Science Chemistry Chapter 1 FAQs

What is the importance of MCQ questions for Class 10 Science Chemistry Chapter 1?

The MCQ questions for Class 10 Science Chemistry Chapter 1 help in assessing your understanding of chemical reactions and equations. They cover key concepts, such as balancing equations, types of reactions, and how chemical reactions are applied in real life. By practicing these questions, students can reinforce their knowledge and boost exam performance.

Where can I find MCQ questions for Chapter 1 of Class 10 Science?

You can find a variety of MCQs for Chapter 1 Science Class 10 in your NCERT textbook, online educational platforms, and practice books. Many websites offer resources like MCQ Chapter 1 Class 10 Science and Class 10 Science Chapter 1 MCQs, which are specifically designed for Class 10 students preparing for exams.

How can practicing MCQs help in understanding Chemical Reactions and Equations better?

Practicing Class 10 Science Chapter 1 MCQs helps students to not only test their knowledge but also understand the application of theoretical concepts in practical scenarios. MCQs like Science Chapter 1 Class 10 MCQ help in recalling important concepts like types of chemical reactions, balancing chemical equations, and the factors affecting reactions.

Are MCQs useful for revising Chapter 1 of Class 10 Science?

Yes, MCQs of Chapter 1 Science Class 10 are an excellent tool for quick revision. By solving these, students can easily review key concepts like the laws of chemical combination, types of reactions, and the principles of chemical equations. It’s an effective way to ensure that no important concept is missed while revising.

What are the common topics covered in Class 10 Science Chapter 1 MCQs?

The Class 10th Science Chapter 1 MCQ typically covers topics such as chemical reactions, types of reactions (combustion, displacement, combination, etc.), balancing chemical equations, the role of heat and energy in reactions, and applications of chemical reactions in daily life.

Where can I find the best resources for MCQs on Chapter 1 Science Class 10?

You can find the best resources for NCERT Class 10 Science Chapter 1 MCQ on online learning platforms like Infinity Learn, educational websites, and NCERT solutions. These resources provide well-structured and carefully curated questions, which will help you prepare effectively for exams.

What is the benefit of solving MCQs from various sources for Chapter 1 Class 10 Science?

Solving MCQs from various sources for Chapter 1 Class 10 Science allows students to encounter a wide variety of question formats, making them adaptable to any type of question that may appear in the exam. Additionally, Class 10 MCQ Science Chapter 1 provides diverse types of questions, which can help in building a deep understanding of the chapter.