Class 10 Science — Chapter 2: Acids, Bases and Salts
68 practice questions · 23 Easy · 23 Medium · 22 Hard
Practise Class 10 Science Chapter 2, "Acids, Bases and Salts", with 68 NCERT-aligned multiple-choice questions. The set is split into 23 Easy, 23 Medium and 22 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and the JEE & NEET foundation years.
"Acids, Bases and Salts" is one of the chapters where concept clarity across physics, chemistry and biology basics really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Acids, Bases and Salts, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 10 Science mastery score. A few sample questions are shown below; sign in free to practise all 68.
Key concepts: Acids, Bases and Salts (Class 10 Science)
Acids and bases react to form salts and water. This chapter covers indicators, the pH scale, and the chemistry of common salts.
- Acids and bases
- Acids produce H⁺ (as H₃O⁺) in water; bases produce OH⁻. They can be strong or weak depending on ionisation.
- Indicators
- Substances that show acidic/basic nature by colour or smell — litmus, phenolphthalein, methyl orange, and olfactory indicators.
- Reactions of acids and bases
- Acid + metal → salt + hydrogen; acid + metal carbonate → salt + water + CO₂; acid + base → salt + water (neutralisation).
- pH scale
- Runs 0–14: below 7 acidic, 7 neutral, above 7 basic. pH matters in digestion, tooth decay and soil.
- Important salts
- Common salt, washing soda, baking soda, bleaching powder and plaster of Paris — each with specific uses.
- Water of crystallisation
- Fixed water molecules in a salt's crystal, e.g. CuSO₄·5H₂O (blue vitriol).
Key formulas — Acids, Bases and Salts
💡 Exam tips for Acids, Bases and Salts
- Lower pH means stronger acidity; each unit is a tenfold change in H⁺ concentration.
- Metal + acid always releases hydrogen gas — confirmed by the 'pop' test with a burning splint.
Sample questions
The pH of a neutral solution is:
On the 0–14 pH scale, 7 is neutral. <7 acidic, >7 basic.
Which has the lowest pH?
Lemon juice (citric acid) has pH ~2 — most acidic of the four.
When water is added to a concentrated acid, what happens to the H⁺ ion concentration and pH?
Dilution lowers H⁺ concentration; pH = −log[H⁺] therefore rises (toward 7).
Acids, Bases and Salts — FAQs
What are the key concepts in Class 10 Science Acids, Bases and Salts?+
Acids and bases react to form salts and water. This chapter covers indicators, the pH scale, and the chemistry of common salts. Key ideas include Acids and bases, Indicators, Reactions of acids and bases, pH scale, Important salts.
What does Class 10 Science Chapter 2 (Acids, Bases and Salts) cover on XamBaaz?+
It covers 68 NCERT-aligned MCQs on "Acids, Bases and Salts" — 23 Easy, 23 Medium and 22 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and the JEE & NEET foundation years.
Are these "Acids, Bases and Salts" questions free to practise?+
Yes — sign in with Google to practise "Acids, Bases and Salts" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Acids, Bases and Salts" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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