ICSE Class 10 Hydrogen Chloride (HCl) — Mock Test (2027)
Free online mock test for Hydrogen Chloride (HCl) (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 Hydrogen Chloride (HCl) 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.A constant boiling mixture which boils without any change in composition.
- A.Aqua Regia
- B.Heterogeneous reaction
- C.Azeotrope
- D.Homogeneous reaction
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2.During the laboratory preparation of hydrogen chloride gas, concentrated sulphuric acid is used because it is:
- A.a strong oxidizing agent that releases chlorine gas
- B.a least volatile acid compared to hydrochloric acid
- C.highly soluble in water, aiding gas collection
- D.a weak acid that prevents violent reactions
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3.Complete the following chemical reaction: $\mathrm{MnO_2 + HCl \longrightarrow}$
- A.$\mathrm{MnO_2 + 4HCl \longrightarrow MnCl_2 + Cl_2 + 2H_2O}$
- B.$\mathrm{MnO_2 + 2HCl \longrightarrow MnCl_2 + H_2 + O_2}$
- C.$\mathrm{MnO_2 + HCl \longrightarrow MnCl_4 + H_2O}$
- D.$\mathrm{MnO_2 + 4HCl \longrightarrow MnCl_2 + 2Cl_2 + 2H_2}$
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4.Why are calcium oxide and phosphorus pentoxide not used to dry hydrogen chloride gas?
- A.They absorb HCl gas without reacting
- B.They react chemically with HCl, forming new compounds
- C.They are insoluble in HCl gas
- D.They decompose HCl into hydrogen and chlorine
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5.(i) Manganese(IV) oxide, Lead(IV) oxide, Potassium permanganate, Potassium dichromate are commonly called as
- A.reducing agents
- B.oxidizing agents
- C.least volatile acids
- D.organic compounds
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