ICSE Class 10 Study of Acids, Bases and Salts — Mock Test (2027)
Free online mock test for Study of Acids, Bases and Salts (ICSE Class 10 Chemistry) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Study of Acids, Bases and Salts chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Which of the following chemical equations correctly represents the preparation of potassium zincate from zinc oxide and potassium hydroxide?
- A.ZnO + KOH → KZnO + H₂O
- B.ZnO + 2KOH → K₂ZnO₂ + H₂O
- C.2ZnO + KOH → K₂ZnO₂ + H₂O
- D.ZnO + KOH → K₂ZnO₂ + H₂
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2.Why is H₃PO₃ a dibasic acid while H₃PO₄ is a tribasic acid?
- A.H₃PO₃ has two replaceable hydrogen atoms attached to oxygen, while H₃PO₄ has three.
- B.H₃PO₃ has three replaceable hydrogen atoms, but one is bonded to phosphorus and not replaceable.
- C.H₃PO₃ and H₃PO₄ both have three replaceable hydrogen atoms, but H₃PO₃ is weaker.
- D.H₃PO₃ has one replaceable hydrogen atom, while H₃PO₄ has two due to structural differences.
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3.As the pH of solution increases, the …………… strength of the solution progressively decreases.
- A.Acidic
- B.Atomic
- C.Basic
- D.None of these
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4.An acid which is not a hydracid is:
- A.H₂S
- B.H₂SO₃
- C.HCl
- D.HBr
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5.Describe the preparation of Calcium carbonate (CaCO₃) using the precipitation method. Which of the following correctly represents the reaction and key procedural steps?
- A.Reaction: CaCl₂ + Na₂CO₃ → CaCO₃↓ + 2NaCl; Procedure: Mix cold solutions, filter, wash with hot water, and dry.
- B.Reaction: Ca(OH)₂ + CO₂ → CaCO₃↓ + H₂O; Procedure: Bubble CO₂ through lime water, filter, and dry the precipitate.
- C.Reaction: CaCl₂ + NaHCO₃ → CaCO₃↓ + NaCl + HCl; Procedure: Mix solutions, boil, filter, and wash with distilled water.
- D.Reaction: Ca(NO₃)₂ + K₂CO₃ → CaCO₃↓ + 2KNO₃; Procedure: Mix solutions, decant, wash with alcohol, and air-dry.
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