ICSE Class 10 Sulphuric Acid (H2SO4) — Mock Test (2027)
Free online mock test for Sulphuric Acid (H2SO4) (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 Sulphuric Acid (H2SO4) 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 balanced chemical equations correctly represents the reaction between zinc sulphide and dilute sulphuric acid?
- A.ZnS + H₂SO₄ → ZnSO₄ + H₂S
- B.ZnS + H₂SO₄ → ZnO + SO₂ + H₂O
- C.ZnS + 2H₂SO₄ → ZnSO₄ + SO₂ + 2H₂O
- D.ZnS + H₂SO₄ → Zn + H₂S + SO₃
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2.Which property of sulphuric acid allows it to be used as a dehydrating agent?
- A.Its ability to dissolve metals.
- B.Its strong affinity for water, removing chemically combined elements of water.
- C.Its low boiling point.
- D.Its colorless and odorless nature.
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3.The reaction between concentrated sulphuric acid and magnesium can be represented by the equation: Mg + 2H₂SO₄ → MgSO₄ + 2H₂O + SO₂ If 60 g of magnesium is used in the reaction, calculate: (a) The mass of sulphuric acid needed for the reaction. (b) The volume of sulphur dioxide gas liberated at S.T.P. (Atomic weights: Mg = 24, H = 1, S = 32, O = 16)
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4.Why is concentrated sulphuric acid unsuitable as a drying agent for hydrogen sulphide gas?
- A.It absorbs H₂S without reacting, making it ineffective.
- B.It reacts with H₂S to produce sulphur and sulphur dioxide.
- C.It decomposes H₂S into hydrogen and sulphur at room temperature.
- D.It forms a stable complex with H₂S, preventing drying.
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5.Which of the following methods correctly distinguishes between carbon dioxide gas and sulphur dioxide gas?
- A.Pass both gases through blue litmus; CO₂ turns it red, SO₂ does not.
- B.Pass both gases through excess lime water; CO₂ turns it milky permanently, SO₂ turns it milky then clear.
- C.Bubble both gases through acidified KMnO₄; CO₂ decolorizes it, SO₂ does not.
- D.Expose both gases to moist air; CO₂ forms white fumes, SO₂ forms no fumes.
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