Last Updated on May 17, 2025 by XAM CONTENT
Understanding the key concepts of Class 10 Science Chapter 2 – Acids, Bases and Salts 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 Acids, Bases and Salts MCQs will strengthen your conceptual clarity.
| Chapter | Acids, Bases and Salts |
| 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 Acids, Bases and Salts Class 10 Science (PDF Download)
MCQs
Q1. Which of the following can be used as an olfactory indicator?
(a) Phenolphthalein
(b) Red cabbage
(c) Vanilla essence
(d) Methyl orange
Show Answer
Answer: (c)
Explanation: Vanilla essence changes smell in acid/base solutions.
Q2. Which gas is evolved when an acid reacts with a metal carbonate?
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Nitrogen
Show Answer
Answer: (c)
Explanation: Carbonates release CO₂ gas when reacted with acids.
Q3. What is the nature of metal oxides based on their chemical reaction with acids?
(a) Neutral
(b) Acidic
(c) Amphoteric
(d) Basic
Show Answer
Answer: (d)
Explanation: Metal oxides are basic and neutralize acids.
Q4. When an acid reacts with a base, the reaction is called:
(a) Decomposition
(b) Displacement
(c) Combination
(d) Neutralisation
Show Answer
Answer: (d)
Explanation: Acid + Base → Salt + Water, a neutralisation reaction.
Q5. What happens when carbon dioxide is passed through lime water?
(a) It becomes blue
(b) It forms white precipitate
(c) It turns green
(d) No reaction
Show Answer
Answer: (b)
Explanation: Ca(OH)₂ + CO₂ → CaCO₃ + H₂O.
Q6. The pH value of a strongly basic solution is likely to be:
(a) 2
(b) 5
(c) 7
(d) 13
Show Answer
Answer: (d)
Explanation: Strong bases have pH close to 14.
Q7. What is the correct order of hydrogen ion concentration for pH values: 3, 5, 7?
(a) 3 > 5 > 7
(b) 7 > 5 > 3
(c) 5 > 7 > 3
(d) 3 < 5 < 7
Show Answer
Answer: (a)
Explanation: Lower pH means higher H⁺ ion concentration.
Q8. Which of the following is used in soda-acid fire extinguishers?
(a) NaCl
(b) Na₂CO₃
(c) NaOH
(d) NaHCO₃
Show Answer
Answer: (d)
Explanation: Sodium bicarbonate releases CO₂ when reacted with acid.
Q9. A solution with pH 1 is how many times more acidic than a solution with pH 3?
(a) 10 times
(b) 2 times
(c) 100 times
(d) 1000 times
Show Answer
Answer: (c)
Explanation: Each pH unit represents a 10× difference in H⁺ ion concentration.
Q10. Which acid is released during a bee sting causing pain?
(a) Acetic acid
(b) Methanoic acid
(c) Citric acid
(d) Tartaric acid
Show Answer
Answer: (b)
Explanation: Bee sting contains methanoic acid (formic acid).
Q11. Which property of acids makes them turn blue litmus red?
(a) Presence of OH⁻ ions
(b) Sour taste
(c) Presence of H⁺ ions
(d) Presence of CO₂ gas
Show Answer
Answer: (c)
Explanation: Acids produce H⁺ ions in aqueous solution.
Q12. What happens when HCl gas is passed over dry litmus paper?
(a) Turns red
(b) Turns blue
(c) No change
(d) Catches fire
Show Answer
Answer: (c)
Explanation: Dry HCl does not ionise without water, so no acidic effect.
Q13. Which of the following salts is basic in nature?
(a) NaCl
(b) NH₄Cl
(c) CH₃COONa
(d) CuSO₄
Show Answer
Answer: (c)
Explanation: CH₃COONa is formed from weak acid and strong base.
Q14. Plaster of Paris sets into hard mass by reacting with:
(a) Acid
(b) Salt
(c) Water
(d) Heat
Show Answer
Answer: (c)
Explanation: POP absorbs water to form gypsum.
Q15. What causes tooth enamel to decay when pH of mouth is low?
(a) Water
(b) CO₂
(c) HCl
(d) Lactic acid
Show Answer
Answer: (d)
Explanation: Lactic acid from bacteria degrades enamel below pH 5.5.
Q16. Which component gives relief from indigestion due to acidity?
(a) Vitamin C
(b) Alcohol
(c) Antacid
(d) Antibiotic
Show Answer
Answer: (c)
Explanation: Antacids like magnesium hydroxide neutralise excess acid.
Q17. Which substance can act as a natural pH indicator?
(a) Petrol
(b) Beetroot extract
(c) Sugar
(d) Table salt
Show Answer
Answer: (b)
Explanation: Beetroot shows different colors in acid/base.
Q18. What is the pH of a neutral solution like distilled water?
(a) 1
(b) 7
(c) 10
(d) 14
Show Answer
Answer: (b)
Explanation: Neutral solution has pH 7.
Q19. Which compound is used to manufacture glass and remove hardness of water?
(a) NaCl
(b) Na₂CO₃
(c) NaHCO₃
(d) CaCl₂
Show Answer
Answer: (b)
Explanation: Washing soda (sodium carbonate) is used for these purposes.
Q20. What type of reaction occurs when copper oxide reacts with dilute HCl?
(a) Combination
(b) Redox
(c) Neutralisation
(d) Precipitation
Show Answer
Answer: (c)
Explanation: Base (oxide) reacts with acid to form salt and water.
We hope the given mcq questions with Answers for Acids, Bases and Salts 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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👉 Explore more resources on CBSE Class 10
Topics from which mcq questions may be asked
- Acid and base properties
- pH and indicators
- Reactions of salts
Acids and bases define the chemical character of everything we interact with.
Frequently Asked Questions (FAQs) on Acids, Bases and Salts MCQ Questions
Q1: Why should I practice Class 10 Science Chapter 2 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 2 “Acids, Bases and Salts“ 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.
