ICSE Class 10 Redox Reactions — Mock Test (2027)
Free online mock test for Redox Reactions (ICSE Class 10 Chemistry) — 85 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 Redox Reactions 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.The reaction N2H4(l) + 2H2O2(l) gives N2(g) + 4H2O(l) is best classified as a redox reaction in which:
- A.Nitrogen is oxidised and oxygen of peroxide is reduced
- B.Nitrogen is reduced and oxygen is oxidised
- C.Only hydrogen changes oxidation number
- D.No element changes oxidation number
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2.Consider the statements about the classical concept of oxidation. Statement 1: Oxidation includes the addition of oxygen or an electronegative element to a substance. Statement 2: Oxidation includes the removal of hydrogen or an electropositive element from a substance. Which is correct?
- A.Both Statement 1 and Statement 2 are correct
- B.Only Statement 1 is correct
- C.Only Statement 2 is correct
- D.Neither statement is correct
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3.Using the standard electrode potentials (Fe3+/Fe2+ = 0.77 V, I2/I- = 0.54 V), the reaction between Fe3+(aq) and I-(aq) is:
- A.Feasible, as Fe3+ (higher E) oxidises I- to I2
- B.Not feasible, as I- cannot be oxidised
- C.Feasible, as I2 oxidises Fe2+
- D.Not feasible, as both have negative E
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4.In the balanced equation Cr2O7^2- + xSO3^2- + 8H+ -> 2Cr3+ + xSO4^2- + 4H2O (acidic medium), the value of the coefficient x of sulphite is:
- A.2
- B.3
- C.6
- D.1
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5.In the reaction Fe2O3(s) + 3CO(g) gives 2Fe(s) + 3CO2(g), the species that is reduced is:
- A.Iron in Fe2O3, from +3 to 0
- B.Carbon in CO, from +2 to +4
- C.Oxygen, from -2 to 0
- D.Carbon in CO2, from +4 to +2
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