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.Copy and complete the following table with reference to two practical applications of electrolysis. Which of the following correctly fills the missing entries for both silver plating of a spoon and purification of copper?
Anode Electrolyte Cathode Silver plating of a spoon Solution of potassium argentocyanide Purification of copper - A.Anode: Pure silver, Cathode: Spoon; Anode: Impure copper, Cathode: Pure copper, Electrolyte: Copper sulphate solution
- B.Anode: Spoon, Cathode: Pure silver; Anode: Pure copper, Cathode: Impure copper, Electrolyte: Copper nitrate solution
- C.Anode: Pure silver, Cathode: Platinum; Anode: Impure copper, Cathode: Graphite, Electrolyte: Sulphuric acid
- D.Anode: Impure silver, Cathode: Spoon; Anode: Pure copper, Cathode: Impure copper, Electrolyte: Potassium sulphate solution
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2.Which of the following is an example of a salt that acts as a weak electrolyte?
- A.Sodium chloride (NaCl)
- B.Ammonium acetate (CH₃COONH₄)
- C.Potassium nitrate (KNO₃)
- D.Calcium chloride (CaCl₂)
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3.Why is copper, despite being a good conductor of electricity, considered a non-electrolyte?
- A.It lacks free electrons
- B.It does not form ions
- C.It is a poor conductor in solid state
- D.It reacts with electricity
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4.Why is electrolysis considered an example of a redox reaction?
- A.It involves only oxidation at both electrodes.
- B.Oxidation occurs at the anode and reduction at the cathode.
- C.It does not involve electron transfer.
- D.Reduction occurs at the anode and oxidation at the cathode.
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5.In the electrolysis of acidified water, why is dilute sulphuric acid preferred over dilute nitric acid for acidification?
- A.Dilute nitric acid is an oxidising agent and may produce NO, interfering with electrolysis.
- B.Dilute sulphuric acid is a stronger acid and increases ion concentration more effectively.
- C.Dilute nitric acid reacts with water to form a non-conducting solution.
- D.Dilute sulphuric acid prevents the formation of hydrogen gas at the cathode.
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