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.Assertion: Hydrogen chloride gas is heavier than air. Reason: Hydrogen chloride gas is a polar covalent compound.
- A.Both assertion and reason are true and reason is the correct explanation of assertion.
- B.Both assertion and reason are true but reason is not the correct explanation of assertion.
- C.Assertion is true but reason is false.
- D.Assertion is false but reason is true.
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2.Why is concentrated sulphuric acid used as a drying agent for hydrogen chloride gas, while other drying agents like phosphorus pentoxide and quicklime cannot be used?
- A.Concentrated sulphuric acid reacts with HCl to form a stable compound, removing moisture effectively.
- B.Concentrated sulphuric acid does not react with HCl, whereas phosphorus pentoxide and quicklime react chemically with it.
- C.Phosphorus pentoxide and quicklime are less effective at absorbing moisture compared to sulphuric acid.
- D.Sulphuric acid is cheaper and more readily available than phosphorus pentoxide or quicklime.
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3.………… combines with unreactive metals like gold, platinum.
- A.Nascent Oxygen [O]
- B.Nascent Iodine [I]
- C.Nascent Nitrogen [O]
- D.Nascent Chlorine [Cl]
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4.What do you observe when hydrochloric acid is added to silver nitrate solution?
- A.A yellow precipitate forms, insoluble in NH₄OH.
- B.A curdy white precipitate appears, soluble in excess NH₄OH.
- C.No visible change occurs.
- D.A brown gas is evolved.
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5.Dry hydrogen chloride gas is collected by the upward displacement of air. Which of the following correctly explains this method of collection?
- A.Hydrogen chloride gas is lighter than air.
- B.Hydrogen chloride gas is highly soluble in water.
- C.Hydrogen chloride gas is heavier than air.
- D.Hydrogen chloride gas is non-polar and insoluble in water.
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