NEET Chemistry: Thermodynamics — MCQ Test 7

Q6. For the reaction \( 2A(g) \rightarrow B(g) \), \( \Delta H = -40.00 \, \text{kJ/mol} \), \( \Delta S = -100.0 \, \text{J/K·mol} \) at 300 K. What is \( \Delta G \)?

Q7. For \(C_2H_4(g) + 3O_2(g) \rightarrow 2CO_2(g) + 2H_2O(l)\), \(\Delta H = -1411 \, \text{kJ/mol}\) at 298 K, what is \(\Delta U\)? (\(R = 8.314 \, \text{J/mol·K}\))

Q8. What is the entropy change (\(\Delta S\)) for the vaporization of 18 g of water at 373 K if \(\Delta H_{vap} = 40.79 \, \text{kJ/mol}\)? (Molar mass of \(H_2O = 18 \, \text{g/mol}\))

Q9. Calculate the heat released when 22 g of \( CO_2 \) is formed from \( C(s) + O_2(g) \rightarrow CO_2(g) \). (\( \Delta H = -393.5 \, \text{kJ/mol} \), molar mass of \( CO_2 = 44 \, \text{g/mol} \))

Q10. Calculate \(\Delta H\) for \(C_2H_5OH(l) + 3O_2(g) \rightarrow 2CO_2(g) + 3H_2O(l)\) using: \(\Delta H_f^\circ (C_2H_5OH,l) = -277.7 \, \text{kJ/mol}\), \(\Delta H_f^\circ (CO_2,g) = -393.5 \, \text{kJ/mol}\), \(\Delta H_f^\circ (H_2O,l) = -285.8 \, \text{kJ/mol}\).

NEET Chemistry — Thermodynamics

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1Question 1 of 10
Medium

Calculate \( \Delta S_{sys} \) for the condensation of 1 mol of ethanol at 351 K. (\( \Delta H_{vap} = 38.6 \, \text{kJ/mol} \))

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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, Condensation, Enthalpy, Neutralization, Approximately, and Reaction.

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 \( \Delta S_{sys} \) for the condensation of 1 mol of ethanol at 351 K. (\( \Delta H_{vap} = 38.6 \, \text{kJ/mol} \))

  • A. 38.6 J/K·mol
  • B. 110.0 J/K·mol
  • C. -110.0 J/K·mol
  • D. -351.0 J/K·mol

Q2. The enthalpy of neutralization of a strong acid with a strong base is approximately:

  • A. -57.1 kJ/mol
  • B. -25.5 kJ/mol
  • C. 57.1 kJ/mol
  • D. 0 kJ/mol

Q3. For the reaction \(2Cl(g) \rightarrow Cl_2(g)\), what are the signs of \(\Delta H\) and \(\Delta S\)?

  • A. \(\Delta H > 0, \Delta S > 0\)
  • B. \(\Delta H < 0, \Delta S> 0\)
  • C. \(\Delta H > 0, \Delta S < 0\)
  • D. \(\Delta H < 0, \Delta S < 0\)

Q4. The standard state of carbon used to define enthalpies of formation is:

  • A. Graphite
  • B. Diamond
  • C. Gas
  • D. Liquid

Q5. For an isolated system with \(\Delta U = 0\), what can be said about \(\Delta S\)?

  • A. \(\Delta S = 0\)
  • B. \(\Delta S < 0\)
  • C. \(\Delta S = \Delta U\)
  • D. \(\Delta S > 0\)

+ 5 more questions in the actual test

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