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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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 \(\Delta S\)?

  • A. \(H_2O(s) \rightarrow H_2O(l)\)
  • B. \(H_2O(g) \rightarrow H_2O(l)\)
  • C. \(2H_2(g) + O_2(g) \rightarrow 2H_2O(g)\)
  • D. \(NH_4Cl(s) \rightarrow NH_3(g) + HCl(g)\)

Q3. For an ideal gas (\(\gamma = 1.4\)) 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 \( 2A(g) + B(g) \rightarrow 2D(g) \), \( \Delta U = -10.5 \, \text{kJ} \), \( \Delta S = -44.1 \, \text{J/K} \) at 298 K. What is \( \Delta G \)?

  • A. -10.5 kJ
  • B. 10.5 kJ
  • C. 0.15 kJ
  • D. -0.15 kJ

Q5. For a process with \(\Delta H = 50 \, \text{kJ}\) and \(\Delta G = 20 \, \text{kJ}\) at 300 K, what is \(\Delta S\)?

  • A. 150 J/K
  • B. 50 J/K
  • C. -100 J/K
  • D. 100 J/K

+ 5 more questions in the actual test

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