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.What is the molecular formula of ethyne (acetylene)?
- A.CH₄
- B.C₂H₄
- C.C₂H₂
- D.C₃H₄
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2.Which of the following is NOT a characteristic of isomers?
- A.They have the same molecular formula.
- B.They have identical physical and chemical properties.
- C.They have the same molecular mass.
- D.They differ in structural arrangement.
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3.Which of the following represents the balanced chemical equation for the reaction when chlorine is added to ethene?
- A.CH₂=CH₂ + Cl₂ → CH₃-CH₂Cl
- B.CH₂=CH₂ + Cl₂ → CH₂Cl-CH₂Cl
- C.CH₂=CH₂ + 2Cl₂ → CHCl₂-CHCl₂
- D.CH₂=CH₂ + Cl₂ → CH₂=CHCl + HCl
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4.Select the correct answer from the choice in brackets: The functional group in ethanoic acid.
- A.aldehydic
- B.carboxyl
- C.hydroxyl
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5.Which equation correctly represents the complete combustion of ethane?
- A.C₂H₆ + O₂ → CO₂ + H₂O
- B.2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O + Heat
- C.C₂H₆ + 3O₂ → 2CO₂ + 3H₂O
- D.C₂H₆ + 5O₂ → 2CO₂ + 3H₂O + Heat
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