Class 10 Science Chapter 2: Acids, Bases and Salts — practice questions with answers
Free practice for Class 10 Science, Chapter 2: Acids, Bases and Salts. Try the solved questions below, then take a free test with instant marking and explanations.
52 questions27 easy, 19 medium, 6 hardNCERT · CBSE · State boards
Sample questions with solutions
Q1. Which of these is a natural indicator?
- Litmus
- Phenolphthalein
- Methyl orange
- Universal indicator
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Answer: A. Litmus
Why: Litmus is extracted from lichen. [p.17]
Why: Litmus is extracted from lichen. [p.17]
Q2. Substances whose odour changes in acidic or basic media are called ______ indicators.
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Answer: olfactory
Why: Onion, vanilla and clove oil are olfactory indicators. [p.18]
Why: Onion, vanilla and clove oil are olfactory indicators. [p.18]
Q3. Acids react with metals to give a salt and ______ gas.
- hydrogen
- oxygen
- carbon dioxide
- chlorine
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Answer: A. hydrogen
Why: Zn + H₂SO₄ → ZnSO₄ + H₂. [p.19]
Why: Zn + H₂SO₄ → ZnSO₄ + H₂. [p.19]
Q4. The reaction between an acid and a base to give salt and water is called ______.
- neutralisation
- decomposition
- precipitation
- oxidation
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Answer: A. neutralisation
Why: Base + Acid → Salt + Water. [p.21]
Why: Base + Acid → Salt + Water. [p.21]
Q5. Bases that dissolve in water are called ______.
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Answer: alkalis
Why: NaOH, KOH are alkalis. [p.23]
Why: NaOH, KOH are alkalis. [p.23]
Q6. What is the chemical formula of baking soda?
- NaHCO₃
- Na₂CO₃
- NaCl
- CaOCl₂
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Answer: A. NaHCO₃
Why: Sodium hydrogencarbonate. [p.31]
Why: Sodium hydrogencarbonate. [p.31]
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Frequently asked questions
How many practice questions are there for Class 10 Science Chapter 2: Acids, Bases and Salts?
52 questions (27 easy, 19 medium, 6 hard). A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 10 Science syllabus, used by CBSE and many state boards.