ICSE Class 10 Sulphuric Acid (H2SO4) — Mock Test (2027)
Free online mock test for Sulphuric Acid (H2SO4) (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 Sulphuric Acid (H2SO4) 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
-
1.What observation is made when concentrated sulphuric acid is added to copper sulphate-5-water?
- A.Blue colour intensifies and a gas is evolved.
- B.Blue colour disappears and the solution becomes colourless.
- C.A black precipitate forms immediately.
- D.The solution turns green and remains liquid.
-
2.Explain how concentrated sulphuric acid (H₂SO₄) functions as both a dehydrating agent and a drying agent. Which of the following best describes its dual role?
- A.It absorbs moisture from gases like chlorine and removes water molecules from compounds like blue vitriol chemically.
- B.It releases water when reacting with gases and adds water to compounds like copper sulphate.
- C.It acts as a drying agent by chemically reacting with water and as a dehydrating agent by physically absorbing moisture.
- D.It only absorbs moisture from the air and does not alter the chemical structure of compounds.
-
3.When concentrated sulphuric acid is added to a lump of blue vitriol, what observation is made and what is the chemical change?
- A.The lump turns red due to oxidation of copper.
- B.The lump turns white due to dehydration of hydrated copper sulphate.
- C.The lump dissolves forming a blue solution of copper sulphate.
- D.The lump blackens due to formation of copper oxide.
-
4.When dilute sulphuric acid reacts with iron sulphide, the gas evolved is
- A.Hydrogen sulphide
- B.Sulphur dioxide
- C.Sulphur trioxide
- D.Vapour of sulphuric acid
-
5.Under what condition does oxalic acid react with sulphuric acid to produce carbon monoxide and carbon dioxide?
- A.When sulphuric acid is dilute.
- B.When sulphuric acid is concentrated.
- C.When the reaction is heated to 100°C.
- D.When oxalic acid is in excess.
Ready? Take the full 20-question test free — instant marking, no sign-up needed.
▶ Start free mock test