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 happens when methane is heated to $1000^{\circ}\mathrm{C}$ in the absence of air, and what is the balanced chemical equation for the reaction?
- A.Methane combusts to form carbon dioxide and water: $\mathrm{CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O}$
- B.Methane decomposes into carbon and hydrogen gas: $\mathrm{CH_{4} \xrightarrow{1000^{\circ}\mathrm{C}} C + 2H_{2}}$
- C.Methane polymerizes to form ethene: $\mathrm{2CH_{4} \rightarrow C_{2}H_{4} + 2H_{2}}$
- D.Methane reacts with nitrogen to form ammonia: $\mathrm{CH_{4} + N_{2} \rightarrow NH_{3} + CH_{3}}$
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2.The total number of different carbon chains that four carbon atoms form in alkane is (i) 5 (ii) 4 (iii) 3 (iv) 2
- A.5
- B.4
- C.3
- D.2
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3.Match the options A to B with the statements (i) to (ii): A. alkynes (i) CₙH₂ₙ₊₂ B. alkane (ii) CₙH₂ₙ₋₂
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4.What is the molecular formula of ethyne?
- A.C₂H₆
- B.C₂H₄
- C.C₂H₂
- D.C₃H₈
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5.Ester is formed by
- a.Two carboxylic acid
- b.One carboxylic acid and one alcohol
- c.Two alcohol
- d.None of the above
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