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.Which metal nitrate, when heated, decomposes directly into its metal form?
- A.Copper nitrate (Cu(NO₃)₂)
- B.Silver nitrate (AgNO₃)
- C.Zinc nitrate (Zn(NO₃)₂)
- D.Lead nitrate (Pb(NO₃)₂)
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2.During a thunderstorm, the rain water contains Nitric acid. The Nitric acid is formed as a result of three chemical reactions. Which of the following sets of balanced chemical equations correctly represents these three reactions?
- 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 + O₂ → NO₂ 2. NO₂ + H₂O → HNO₃ 3. 2HNO₃ + O₂ → 2HNO₄
- D.1. N₂ + 3O₂ → 2NO₃ 2. 2NO₃ + H₂O → 2HNO₃ 3. HNO₃ + O₂ → HNO₄
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3.Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO₃. Why is this the case?
- A.Nitric acid decomposes into nitrogen dioxide and oxygen at 68% concentration.
- B.Nitric acid forms an azeotropic mixture with water at 68%, preventing further separation by distillation.
- C.The boiling point of nitric acid drops sharply beyond 68%, making distillation ineffective.
- D.Water evaporates completely at 68%, leaving behind pure nitric acid crystals.
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4.In the first step of the manufacture of nitric acid, what is the name of the catalyst used for the catalytic oxidation of ammonia?
- A.Iron
- B.Platinum
- C.Nickel
- D.Vanadium pentoxide
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5.What observation is made when concentrated nitric acid is reacted with sulphur?
- A.Dense brown fumes of nitrogen dioxide gas are released
- B.A colorless gas with a pungent odor is evolved
- C.The solution turns blue with no gas evolution
- D.White fumes of sulphur dioxide are produced
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