ICSE Class 10 Thermodynamics — Mock Test (2027)
Free online mock test for Thermodynamics (ICSE Class 10 Chemistry) — 96 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 Thermodynamics 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.The standard Gibbs energy change is related to the equilibrium constant K by:
- A.DrG = RT ln K
- B.DrG = -RT ln K
- C.DrG = -RT / ln K
- D.DrG = RT + ln K
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2.For the combustion C(graphite) + O2(g) -> CO2(g) at 298 K, dn_g = 0 and dU = -393.0 kJ/mol. The value of dH is:
- A.-395.5 kJ/mol
- B.-393.0 kJ/mol
- C.-390.5 kJ/mol
- D.0 kJ/mol
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3.According to the second law of thermodynamics, for a spontaneous process the total entropy change (system + surroundings) is:
- A.Less than zero
- B.Equal to zero
- C.Greater than zero
- D.Always equal to DH
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4.Which statement about decrease in enthalpy as a criterion for spontaneity is correct?
- A.All spontaneous reactions must be exothermic
- B.Decrease in enthalpy may be a contributory factor but is not true for all cases
- C.Only endothermic reactions are spontaneous
- D.Enthalpy change has no effect on spontaneity
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5.Assertion (A): Internal energy U is a state function. Reason (R): The adiabatic work required to bring about a change of state depends on the path taken between the two states.
- 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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