ICSE Class 10 Nitric Acid (HNO3) — Mock Test (2027)
Free online mock test for Nitric Acid (HNO3) (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 Nitric Acid (HNO3) 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 nitrate which forms a precipitate with ammonium hydroxide and is also soluble in excess of it:
- a.ferrous nitrate
- b.ferric nitrate
- c.lead nitrate
- d.copper nitrate
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2.What is the balanced chemical equation for the action of heat on potassium nitrate?
- A.KNO₃ → KNO₂ + O₂
- B.2KNO₃ → 2KNO₂ + O₂
- C.KNO₃ → K₂O + NO₂ + O₂
- D.2KNO₃ → K₂O + 2NO₂ + O₂
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3.What observation is made when hot and concentrated nitric acid is added to sawdust?
- A.Sawdust dissolves without any visible change
- B.Formation of a brown gas and flames
- C.Sawdust turns black without flames
- D.Effervescence of hydrogen gas
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4.Concentrated nitric acid appears yellow when left for a while in a glass bottle. Which of the following best explains this observation?
- A.The acid absorbs impurities from the glass.
- B.Nitrogen dioxide (NO₂) forms due to decomposition in light.
- C.The acid reacts with atmospheric nitrogen.
- D.Oxygen in the bottle oxidizes the acid.
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5.Rain water contains traces of Nitric acid. Which set of balanced chemical equations correctly explains the formation of Nitric acid in rainwater?
- A.1. N₂ + O₂ → 2NO 2. 2NO + O₂ → 2NO₂ 3. 4NO₂ + 2H₂O + O₂ → 4HNO₃
- B.1. N₂ + 2O₂ → 2NO₂ 2. 2NO₂ + H₂O → HNO₃ + HNO₂ 3. 2HNO₂ + O₂ → 2HNO₃
- C.1. N₂ + 3H₂ → 2NH₃ 2. 4NH₃ + 5O₂ → 4NO + 6H₂O 3. 2NO + O₂ → 2NO₂
- D.1. N₂ + O₂ → N₂O 2. 2N₂O + O₂ → 4NO 3. NO + H₂O → HNO₃
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