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.Which of the following experiments demonstrates the extreme solubility of hydrogen chloride gas in water?
- A.Flame test
- B.Fountain experiment
- C.Electrolysis
- D.Distillation
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2.Which chemical test can be used to distinguish hydrogen chloride gas from hydrogen sulphide gas?
- A.Bring a rod dipped in ammonium hydroxide near the gases; dense white fumes form with HCl.
- B.Pass the gases through lime water; HCl turns it milky.
- C.Expose the gases to litmus paper; H₂S turns blue litmus red.
- D.Heat the gases; HCl decomposes into hydrogen and chlorine.
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3.Which of the following represents the balanced equation for the reaction of concentrated hydrochloric acid with Potassium permanganate solution?
- A.KMnO₄ + 8HCl → KCl + MnCl₂ + 4H₂O + 2.5Cl₂
- B.2KMnO₄ + 16HCl → 2KCl + 2MnCl₂ + 8H₂O + 5Cl₂
- C.KMnO₄ + 16HCl → KCl + MnCl₂ + 8H₂O + 5Cl₂
- D.2KMnO₄ + 8HCl → 2KCl + 2MnCl₂ + 4H₂O + 2Cl₂
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4.What is the role of sodium hydrogen sulphate (NaHSO₄) in the preparation of hydrogen chloride gas?
- A.It acts as a catalyst to speed up the reaction between sodium chloride and sulphuric acid.
- B.It is formed as an intermediate product and can further react with sodium chloride to produce more hydrogen chloride gas.
- C.It neutralizes excess sulphuric acid to prevent the formation of impurities.
- D.It decomposes to release oxygen, which aids in the formation of hydrogen chloride gas.
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5.Which balanced equation shows the reaction of dilute hydrochloric acid with sodium sulphite?
- A.Na₂SO₃ + 2HCl → 2NaCl + H₂O + SO₂
- B.Na₂SO₃ + HCl → NaCl + H₂SO₄
- C.Na₂SO₃ + 2HCl → Na₂S + 2H₂O + O₂
- D.Na₂SO₃ + HCl → Na₂O + H₂O + SO₂
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