ICSE Class 10 Organic Chemistry - Some Basic Principles and Techniques — Mock Test (2027)
Free online mock test for Organic Chemistry - Some Basic Principles and Techniques (ICSE Class 10 Chemistry) — 79 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 - Some Basic Principles and Techniques 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.![c_h_estimation_combustion.png]() The figure shows the apparatus used for the estimation of carbon and hydrogen in an organic compound. The sample to be analysed is placed in which part of the apparatus, where it is heated by the burner?
- A.The platinum boat inside the combustion tube
- B.The U-tube containing anhydrous CaCl2
- C.The U-tube containing KOH solution
- D.The pure dry oxygen inlet
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2.In the reaction CH3Br + OH minus gives CH3OH + Br minus, the species OH minus acts as a:
- A.Nucleophile
- B.Electrophile
- C.Free radical
- D.Lewis acid
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3.![c_h_estimation_combustion.png]() The combustion tube in the figure is packed with CuO pellets in addition to holding the sample boat. What is the role of the CuO pellets shown inside the combustion tube?
- A.They act as an oxidising agent to ensure complete oxidation of the compound to CO2 and H2O
- B.They absorb the water vapour produced in the reaction
- C.They absorb the carbon dioxide produced in the reaction
- D.They cool the gases before they reach the U-tubes
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4.As the s-character of a carbon hybrid orbital increases (sp3 to sp2 to sp), the carbon-hydrogen bond length:
- A.Increases
- B.Decreases
- C.Remains unchanged
- D.First increases then decreases
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5.What is the IUPAC name of the compound CH3-CH(CH3)-CH2-CH3?
- A.2-Methylbutane
- B.3-Methylbutane
- C.2-Methylpropane
- D.n-Pentane
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