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.

Sample questions

1. 1.What is a homologous series, and which of the following correctly describes two of its characteristics?
   • A.A group of organic compounds with similar structure and chemical properties, where each member differs by a CH₂ group and shares the same general formula.
   • B.A series of inorganic compounds with identical physical properties, differing by a CH₃ group and varying functional groups.
   • C.A collection of organic compounds with unrelated structures but identical molecular masses, differing by a CH group.
   • D.A set of compounds with the same functional group but differing by a CO₂ group and unrelated chemical properties.
2. 2.What is the term for the unique property of carbon atoms to link with each other to form long chains or ring structures?
   • A.Isomerism
   • B.Catenation
   • C.Polymerization
   • D.Hybridization
3. 3.General formula of alkenes is:
   • A.$\mathrm{C_nH_{2n}}$
   • B.$\mathrm{C_nH_{2n + 2}}$
   • C.$\mathrm{C_nH_{2n - 2}}$
   • D.$\mathrm{C_nH_{2n + 1}}$
4. 4.What is the general formula for the ketone series?
   • A.R - COOH (where R is an alkyl group)
   • B.R - CHO (where R is an alkyl group)
   • C.R - CO - R' (where R and R' are alkyl groups)
   • D.CₙH₂ₙ₊₂ (where n is the number of carbon atoms)
5. 5.Which of the following correctly represents the preparation of ethanol from monochloroethane and aqueous sodium hydroxide?
   • A.CH₃CH₂Cl + NaOH (aq) → CH₃CH₂OH + NaCl
   • B.CH₃CH₂Cl + NaOH (alc) → CH₂=CH₂ + NaCl + H₂O
   • C.CH₃CH₂Cl + NaOH (aq) → CH₃CH₂ONa + HCl
   • D.CH₃CH₂Cl + H₂O → CH₃CH₂OH + HCl