NEET Chemistry: Thermodynamics — MCQ Test 13

Q6. For the reaction \(C(s) + O_2(g) \rightarrow CO_2(g)\), \(\Delta H = -393.5 \, \text{kJ/mol}\) at 298 K. What is \(\Delta U\)? (\(R = 8.314 \, \text{J/mol·K}\))

Q7. For a reversible isothermal compression of an ideal gas, the heat absorbed is:

Q8. In an isobaric process, 600 J of heat is supplied, and the system does 200 J of work. What is \(\Delta U\)?

Q9. What is the entropy change when 1 mol of an ideal gas is compressed isothermally from 10 L to 5 L? (\(R = 8.314 \, \text{J/mol·K}\))

Q10. For the reaction \(N_2(g) + O_2(g) \rightarrow 2NO(g)\), \(\Delta H = 180.6 \, \text{kJ/mol}\) at 298 K. What is \(\Delta U\) if the gas behaves ideally? (\(R = 8.314 \, \text{J/mol·K}\))

NEET Chemistry — Thermodynamics

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Calculate \(\Delta G^\circ\) for a reaction with \(K = 10^4\) at 298 K. (\(R = 8.314 \, \text{J/mol·K}\))

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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 Calculate, Reaction, Rightarrow, Compressed, Adiabatically, and Temperature.

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. Calculate \(\Delta G^\circ\) for a reaction with \(K = 10^4\) at 298 K. (\(R = 8.314 \, \text{J/mol·K}\))

  • A. 22.82 kJ/mol
  • B. 11.41 kJ/mol
  • C. 45.64 kJ/mol
  • D. -22.82 kJ/mol

Q2. For the reaction \(H_2(g) + I_2(g) \rightarrow 2HI(g)\), \(\Delta H = 52.96 \, \text{kJ/mol}\) at 298 K. What is \(\Delta U\)? (\(R = 8.314 \, \text{J/mol·K}\))

  • A. 50.48 kJ/mol
  • B. 55.44 kJ/mol
  • C. 52.96 kJ/mol
  • D. 0 kJ/mol

Q3. For an ideal gas (\(\gamma = 1.33\)) compressed adiabatically from 18 L to 6 L at 300 K, what is the final temperature?

  • A. 100 K
  • B. 288 K
  • C. 432 K
  • D. 900 K

Q4. For a chemical reaction carried out at constant temperature (ideal-gas approximation) with \( \Delta U = 250 \,\text{J} \) and no change in moles of gas (\( \Delta n_g = 0 \)), what is the change in enthalpy \( (\Delta H) \)?

  • A. 250 J
  • B. 0 J
  • C. 500 J
  • D. -250 J

Q5. For the combustion of 16 g of methane at 298 K (\( \Delta H_c = -890.30 \, \text{kJ/mol} \), molar mass = 16 g/mol), what is \( \Delta U \)? (\( R = 8.314 \, \text{J/mol·K} \))

  • A. -885.3 kJ/mol
  • B. -890.3 kJ/mol
  • C. -895.3 kJ/mol
  • D. -880.3 kJ/mol

+ 5 more questions in the actual test

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