NEET Chemistry: Thermodynamics — MCQ Test 2

Q6. What is the relationship between \(\Delta H\) and \(\Delta U\) for the reaction \(2SO_2(g) + O_2(g) \rightarrow 2SO_3(g)\) at 298 K? (\(R = 8.314 \, \text{J/mol·K}\))

Q7. Using Hess’s law, calculate \(\Delta H\) for \(2S(s) + 3O_2(g) \rightarrow 2SO_3(g)\) given: \(S(s) + O_2(g) \rightarrow SO_2(g)\), \(\Delta H = -296.8 \, \text{kJ/mol}\); \(2SO_2(g) + O_2(g) \rightarrow 2SO_3(g)\), \(\Delta H = -197.8 \, \text{kJ/mol}\).

Q8. For a reaction with \(\Delta H = 120 \, \text{kJ/mol}\) and \(\Delta S = 300 \, \text{J/K}\), what is \(\Delta G\) at 400 K?

Q9. For an exothermic reaction at constant pressure, the heat evolved is equal to:

Q10. The bond enthalpy of C-Cl in \( \ce{CCl4(g)} \) is to be calculated given: \( \Delta H_f^\circ(\ce{CCl4,g}) = -95.7 \, \text{kJ/mol} \), \( \Delta H_a(\ce{C,g}) = 715 \, \text{kJ/mol} \), \( \Delta H_a(\ce{Cl2,g}) = 242 \, \text{kJ/mol} \). What is the bond enthalpy?

NEET Chemistry — Thermodynamics

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Medium

Which thermodynamic quantity is a measure of disorder in a system?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Thermodynamics. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Thermodynamic, Quantity, Disorder, Following, Processes, and Negative.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1.

Which thermodynamic quantity is a measure of disorder in a system?

  • A.

    Entropy

  • B.

    Enthalpy

  • C.

    Internal energy

  • D.

    Gibbs free energy

Q2.

Which of the following processes has a negative ΔS\Delta S?

  • A.

    H2O(s)→H2O(l)H_2O(s) \rightarrow H_2O(l)

  • B.

    H2O(g)→H2O(l)H_2O(g) \rightarrow H_2O(l)

  • C.

    2H2(g)+O2(g)→2H2O(g)2H_2(g) + O_2(g) \rightarrow 2H_2O(g)

  • D.

    NH4Cl(s)→NH3(g)+HCl(g)NH_4Cl(s) \rightarrow NH_3(g) + HCl(g)

Q3.

For an ideal gas (γ=1.4\gamma = 1.4) expanding adiabatically from 15 L to 30 L at 450 K, what is the final temperature?

  • A.

    225 K

  • B.

    341 K

  • C.

    595 K

  • D.

    450 K

Q4.

For the reaction 2A(g)+B(g)→2D(g)2A(g) + B(g) \rightarrow 2D(g), ΔU=−10.5 kJ\Delta U = -10.5 \, \text{kJ}, ΔS=−44.1 J/K\Delta S = -44.1 \, \text{J/K} at 298 K. What is ΔG\Delta G?

  • A.

    -10.5 kJ

  • B.

    10.5 kJ

  • C.

    0.15 kJ

  • D.

    -0.15 kJ

Q5.

For a process with ΔH=50 kJ\Delta H = 50 \, \text{kJ} and ΔG=20 kJ\Delta G = 20 \, \text{kJ} at 300 K, what is ΔS\Delta S?

  • A.

    150 J/K

  • B.

    50 J/K

  • C.

    -100 J/K

  • D.

    100 J/K

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