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.What is the process of formation of ions from molecules called?
- A.Dissociation
- B.Ionisation
- C.Electrolysis
- D.Neutralisation
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2.To carry out the so-called "electrolysis of water", sulphuric acid is added to water. How does the addition of sulphuric acid produce a conducting solution?
- A.Sulphuric acid dissociates into H⁺ and SO₄²⁻ ions, enabling electrical conductivity.
- B.Sulphuric acid reacts with water to form a non-ionic compound that conducts electricity.
- C.Sulphuric acid increases the viscosity of water, allowing ions to move freely.
- D.Sulphuric acid decomposes water into hydrogen and oxygen gases, which conduct electricity.
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3.Match the following terms with their correct descriptions:
Column A Column B 1. Strong electrolyte a. Poor conductor of electricity 2. Weak electrolyte b. Contains only molecules in solution 3. Non-electrolyte c. Good conductor of electricity 4. Anode d. Electrode connected to the negative terminal of the battery 5. Cathode e. Electrode connected to the positive terminal of the battery 6. Oxidation f. Gain of electrons 7. Reduction g. Loss of electrons -
4.Aqueous copper (II) sulphate is electrolysed using copper electrodes. Which statement about the electrolysis is not correct?
- a.An oxidation reaction occurs at the positive electrode.
- b.The current is carried through the electrolyte by ions.
- c.The positive electrode loses mass.
- d.The number of copper (II) ions in the electrolyte decreases.
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5.Assertion: Electrolysis is a redox reaction. Reason: Oxidation and reduction occur at the same electrode during electrolysis. (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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