ICSE Class 10 Equilibrium — Mock Test (2027)
Free online mock test for Equilibrium (ICSE Class 10 Chemistry) — 99 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 Equilibrium 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.For H2(g) + I2(g) forming 2HI(g), Kc = 57.0 at 700 K. A mixture has [H2] = 0.10 M, [I2] = 0.20 M, [HI] = 0.40 M. The reaction will:
- A.Be at equilibrium
- B.Proceed in the forward direction to form more HI
- C.Proceed in the reverse direction to form more H2 and I2
- D.Stop reacting
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2.Assertion (A): Adding an inert gas such as argon at constant volume does not disturb a gaseous equilibrium. Reason (R): At constant volume the inert gas does not change the partial pressures or molar concentrations of the reacting species.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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3.Assertion (A): For the synthesis of ammonia, N2(g) + 3H2(g) gives 2NH3(g), a low temperature favours a high yield of ammonia. Reason (R): The formation of ammonia is an exothermic process.
- A.Both A and R are true and R is the correct explanation of A
- B.Both A and R are true but R is NOT the correct explanation of A
- C.A is true but R is false
- D.A is false but R is true
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4.At 298 K the relation between pH and pOH for any aqueous solution is:
- A.pH + pOH = 7
- B.pH + pOH = 14
- C.pH - pOH = 14
- D.pH x pOH = 14
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5.If a Bronsted acid is strong, what can be inferred about its conjugate base, and why?
- A.It is a strong base, because it readily accepts protons
- B.It is a weak base, because the strong acid loses its proton readily and the base has little tendency to regain it
- C.It is a neutral species with no acid-base property
- D.It is a strong acid as well
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