ICSE Class 10 Organic Chemistry — Mock Test (2027)
Free online mock test for Organic Chemistry (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 Organic Chemistry 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 represents the balanced equation when ethene combines with hydrogen chloride?
- A.C₂H₄ + HCl → C₂H₅Cl
- B.C₂H₄ + 2HCl → C₂H₄Cl₂
- C.C₂H₄ + HCl → C₂H₃Cl + H₂
- D.C₂H₆ + HCl → C₂H₅Cl + H₂
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2.Which of the following is a correct set of four characteristics of organic compounds?
- A.Ionic in nature, soluble in water, high melting and boiling points, non-combustible.
- B.Covalent in nature, insoluble in water but soluble in organic solvents, low melting and boiling points, combustible.
- C.Covalent in nature, soluble in water, high melting and boiling points, non-combustible.
- D.Ionic in nature, insoluble in organic solvents, low melting and boiling points, combustible.
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3.Which of the following represents the balanced chemical equation for the reaction when ethyne is passed through Fehling's solution?
- A.HC≡CH + Cu₂Cl₂ + 2NH₄OH → CuC≡CCu + 2NH₄Cl + 2H₂O
- B.HC≡CH + 2CuCl → CuC≡CCu + 2HCl
- C.HC≡CH + AgNO₃ + NH₄OH → AgC≡CAg + NH₄NO₃ + H₂O
- D.HC≡CH + 2KMnO₄ → KOOC–COOK + 2MnO₂ + 2H₂O
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4.What is pyrolysis or cracking, and which of the following best illustrates its process with an example?
- A.The thermal decomposition of alkanes in the absence of air to produce smaller hydrocarbons, e.g., C10H22 → C5H12 + C5H10.
- B.The combustion of alkanes in the presence of oxygen to release energy, e.g., CH4 + 2O2 → CO2 + 2H2O.
- C.The polymerization of alkenes to form larger molecules, e.g., n(C2H4) → (C2H4)n.
- D.The substitution reaction of alkanes with halogens in the presence of UV light, e.g., CH4 + Cl2 → CH3Cl + HCl.
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5.CH₃CH₂OH \xrightarrow{\text{Alkaline KMnO₄}} CH₃COOH In the above reaction, alkaline KMnO₄ acts as
- a.Oxidising agent
- b.Reducing agent
- c.Catalyst
- d.Dehydrating agent
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