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.What happens to nitric acid when it is exposed to light?
- A.It remains colorless and stable
- B.It turns yellow due to decomposition
- C.It solidifies into white crystals
- D.It evaporates completely without residue
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2.Why is nitric acid kept in a reagent bottle for a long time?
- A.To prevent it from reacting with atmospheric nitrogen and forming harmful compounds.
- B.To slow down its decomposition into nitrogen dioxide, water, and oxygen caused by light exposure.
- C.To maintain its concentration by preventing evaporation of the acid over time.
- D.To avoid contamination from dust particles that could alter its chemical properties.
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3.Assertion : Nitric acid decomposes upon exposure to light. Reason : Nitric acid is a strong acid and decomposes into nitrogen dioxide, water and oxygen. (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.
- 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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4.Complete and balance the following chemical equation for the reaction of potassium iodide with concentrated nitric acid: KI + HNO₃ → (Conc.)
- A.KI + HNO₃ → KNO₃ + NO₂↑ + I₂↑ + H₂O
- B.2KI + 4HNO₃ → 2KNO₃ + 2NO₂↑ + I₂↑ + 2H₂O
- C.KI + 2HNO₃ → KNO₃ + NO↑ + I₂↑ + H₂O
- D.2KI + HNO₃ → 2KNO₃ + NO₂↑ + I₂↑
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5.Which of the following represents the balanced chemical equations for the reaction of very dilute nitric acid with magnesium and manganese at room temperature?
- A.Mg + HNO₃ (V. dilute) → Mg(NO₃)₂ + H₂; Mn + HNO₃ (V. dilute) → Mn(NO₃)₂ + H₂
- B.Mg + 2HNO₃ (V. dilute) → Mg(NO₃)₂ + H₂; Mn + 2HNO₃ (V. dilute) → Mn(NO₃)₂ + H₂
- C.Mg + 4HNO₃ (V. dilute) → Mg(NO₃)₂ + 2H₂O + 2NO₂; Mn + 4HNO₃ (V. dilute) → Mn(NO₃)₂ + 2H₂O + 2NO₂
- D.Mg + HNO₃ (V. dilute) → MgO + NO₂ + H₂O; Mn + HNO₃ (V. dilute) → MnO + NO₂ + H₂O
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