ICSE Class 10 Electrolysis — Mock Test (2027)
Free online mock test for Electrolysis (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 Electrolysis 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.Assertion: Copper is obtained at the cathode during the electrolysis of Copper sulphate solution. Reason: Copper ions gain electrons at the cathode. (a) Both assertion and reason are true and reason is the correct explanation of assertion. (b) Both assertion and reason are true, but reason is not the correct explanation of assertion. (c) Assertion is true, but reason is false. (d) Assertion is false, but reason is true.
- A.Both assertion and reason are true and reason is the correct explanation of assertion.
- B.Both assertion and reason are true, but reason is not the correct explanation of assertion.
- C.Assertion is true, but reason is false.
- D.Assertion is false, but reason is true.
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2.During the electrolysis of aqueous copper(II) sulphate using copper electrodes, what is the correct equation for the reaction occurring at the anode?
- A.Cu²⁺ + 2e⁻ → Cu
- B.Cu - 2e⁻ → Cu²⁺
- C.2H₂O → O₂ + 4H⁺ + 4e⁻
- D.SO₄²⁻ - 2e⁻ → SO₄
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3.What is the term for a thin film of a non-reactive metal deposited over a superior metal?
- A.Galvanisation
- B.Electroplating
- C.Anodising
- D.Corrosion
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4.Why is the electrolysis of acidulated water considered an example of catalysis?
- A.The acid decomposes water into hydrogen and oxygen.
- B.The acid speeds up the reaction without being consumed.
- C.The acid reacts with water to form a new compound.
- D.The acid prevents the formation of hydrogen gas.
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5.Zinc can produce hydrogen on reacting with acids but copper cannot. Why?
- A.Zinc is above hydrogen in the electrochemical series, allowing it to displace hydrogen from acids, while copper is below hydrogen.
- B.Zinc has a higher atomic mass than copper, making it more reactive with acids.
- C.Copper forms a protective oxide layer that prevents reaction with acids, unlike zinc.
- D.Zinc reacts with acids only when heated, whereas copper reacts at room temperature.
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