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.Assertion (A): A reaction with Kc = 4.0 x 10 to the power 31 proceeds nearly to completion. Reason (R): A large value of the equilibrium constant indicates a high concentration of products relative to reactants.
- 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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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): In Haber's process, when equilibrium mixtures made separately with H2 and with D2 are mixed, scrambled species like NH2D and HD appear. Reason (R): Once a reaction reaches equilibrium the forward and reverse reactions stop completely.
- 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.For 2H2(g) + CO(g) gives CH3OH(g) at equilibrium, what is the effect of removing CO from the mixture? (NCERT Exercise 6.29)
- A.The equilibrium shifts in the reverse direction to replenish CO
- B.The equilibrium shifts forward to produce more CH3OH
- C.The equilibrium is unaffected
- D.The value of Kc decreases
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5.A solution has pH = 9 at 298 K. Its pOH and [OH-] are:
- A.pOH = 5, [OH-] = 1 x 10^-5 M
- B.pOH = 9, [OH-] = 1 x 10^-9 M
- C.pOH = 5, [OH-] = 1 x 10^-9 M
- D.pOH = 23, [OH-] = 1 x 10^-23 M
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