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 for the preparation of ethyne from 1,2-dibromoethane (ethylene dibromide)?
- A.CH₂Br-CH₂Br + 2KOH (alc.) → C₂H₂ + 2KBr + 2H₂O
- B.CH₂Br-CH₂Br + KOH (alc.) → C₂H₂ + KBr + H₂O
- C.CH₂Br-CH₂Br + 2KOH (aq.) → C₂H₄ + 2KBr + 2H₂O
- D.CH₂Br-CH₂Br → C₂H₂ + Br₂
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2.Which of the following characteristics is **false** for organic compounds? 235. Are non-volatile and non-inflammable.
- A.True
- B.False
- C.Partially true
- D.Depends on the compound
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3.Which of the following correctly represents the electron dot formula of ethene (ethylene)?
- A.H: C : C :H with one shared pair of electrons between the carbon atoms.
- B.H: C :: C :H with two shared pairs of electrons between the carbon atoms.
- C.H⋅C⋅C⋅H with no shared electrons between the carbon atoms.
- D.H:C:::C:H with three shared pairs of electrons between the carbon atoms.
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4.The reaction in which a hydrogen atom of an alkane is replaced by a halogen is specifically termed:
- A.Hydrogenation
- B.Halogenation
- C.Oxidation
- D.Polymerization
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5.Which type of hydrocarbons contain a —C=O functional group bonded to two carbon atoms?
- A.Aldehydes
- B.Ketones
- C.Carboxylic acids
- D.Alcohols
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