This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The Carnot cycle consists of ..... A) Two constant volume and two adiabatic processes. B) Two constant pressure and two adiabatic processes. C) Two isothermal and two adiabatic processes. D) One constant volume, one constant pressure, and two reversible adiabatic processes. Show Answer Correct Answer: C) Two isothermal and two adiabatic processes. 2. The change in free energy for the biological system is A) Positive. B) Negative. C) Zero. D) Cannot be predicted. Show Answer Correct Answer: B) Negative. 3. Heat change at constant volume is A) U. B) $\Delta$U. C) H. D) $\Delta$H. Show Answer Correct Answer: B) $\Delta$U. 4. Which of the following is NOT an application of thermodynamics in daily life mentioned in the text? A) Refrigerators. B) Car engines. C) Power plants. D) Solar panels. Show Answer Correct Answer: D) Solar panels. 5. Pressure cooker is an example of ..... system. A) Open. B) Closed. C) Isolated. D) None of the above. Show Answer Correct Answer: B) Closed. 6. Why does temperature change always move from regions of hot to regions of cold? A) Because colder particles have more potential energy. B) Because hotter particles can not slow down. C) Because this is the fastest, most efficient means of conducting thermal energy. D) Because kinetic energy is transferred in the collisions of particles. Show Answer Correct Answer: D) Because kinetic energy is transferred in the collisions of particles. 7. The energy transit from one body to another is the result of a temperature difference between the two bodies A) Heat. B) Energy. C) Power. D) Specific Heat. Show Answer Correct Answer: A) Heat. 8. What is the meaning of compressed liquid or subcooled liquid? A) Water exists as a liquid that is ready to be vaporised. B) A substance that is not about to vaporize. C) A substance that is about to vaporize. D) Water exists as a liquid that is already vaporised. Show Answer Correct Answer: B) A substance that is not about to vaporize. 9. In a thermodynamic process, the system absorbs 500 J of heat and does 200 J of work. What is the change in internal energy of the system? A) 300 J. B) 700 J. C) 500 J. D) 200 J. Show Answer Correct Answer: A) 300 J. 10. What is the difference between isothermal and adiabatic processes? A) Isothermal processes occur at high pressure; adiabatic processes occur at low pressure. B) Isothermal processes maintain constant temperature; adiabatic processes involve no heat exchange. C) Isothermal processes involve heat exchange; adiabatic processes maintain constant temperature. D) Isothermal processes are irreversible; adiabatic processes are reversible. Show Answer Correct Answer: B) Isothermal processes maintain constant temperature; adiabatic processes involve no heat exchange. 11. Which is the best description of equilibrium? A) When two systems weigh the same amount as each other. B) The equal exchange between reactants and products in open systems. C) The equal exchange between reactants and products in closed systems. D) When reactants and products become equal to each other. Show Answer Correct Answer: C) The equal exchange between reactants and products in closed systems. 12. For an isothermal process, which of the following statements is correct? A) Work, heat, and internal energy all undergo changes. B) No work is done; internal energy change is due to heat. C) Work and heat balance each other, so that there is no change in internal energy. D) No energy is transferred as heat; internal energy change is due to work. Show Answer Correct Answer: C) Work and heat balance each other, so that there is no change in internal energy. 13. In a certain process, 400 J of heat is transferred to a system and the system simultaneously does 100 J of work. The change in internal energy of the system is A) 500 J. B) 300 J. C) -100 J. D) -300 J. Show Answer Correct Answer: B) 300 J. 14. In order for heat transfer to occur, which of the following must be present? A) Temperature gradient. B) Contact between two mediums. C) A medium. D) All of these must be present for heat transfer to occur. Show Answer Correct Answer: A) Temperature gradient. 15. Heat transfer by conduction occurs when ..... A) Particles bump into each other. B) Large numbers of atoms move from place to place. C) Atoms give off heat in the form of electromagnetic waves. D) Electromagnetic waves travel from place to place through a vacuum. Show Answer Correct Answer: A) Particles bump into each other. 16. Calculate the entropy change involved in the conversion of 1 mole of ice at 273 K to water at the same temperature. A) 12.4 J K$^{-1}$. B) 22.1 J K-1. C) 43 J K$^{-1}$. D) 20 J K$^{-1}$. Show Answer Correct Answer: B) 22.1 J K-1. 17. A system in which energy can cross the boundary but mass cannot is: A) A fixed system. B) An imaginary system. C) An open system. D) A closed system. Show Answer Correct Answer: D) A closed system. 18. If the temperature of a gas increases and there is negative work done on the gas, then ..... A) There must be heat added to the gas. B) The gas must be giving off heat to the environment. C) This is an adiabatic process. D) There must be less heat added than the work done on the gas. Show Answer Correct Answer: A) There must be heat added to the gas. 19. In a closed system, if the internal energy decreases by 50 J and the system does 20 J of work, what is the heat change? A) 30 J released. B) 30 J absorbed. C) 70 J released. D) 70 J absorbed. Show Answer Correct Answer: A) 30 J released. 20. The first law of thermodynamics is the conservation of: A) Momentum. B) Energy. C) Both. D) Temperature. Show Answer Correct Answer: B) Energy. 21. Which best describes a spontaneous process as it relates to the second law of thermodynamics? A) It destroys heat. B) It requires work. C) It creates energy. D) It occurs naturally. Show Answer Correct Answer: D) It occurs naturally. 22. How is temperature defined? A) Total energy per molecule. B) Average kinetic energy per molecule. C) Potential energy per molecule. D) Mechanical energy. Show Answer Correct Answer: B) Average kinetic energy per molecule. 23. The process with negative entropy change is A) Dissolution of iodine in water. B) Sublimation of dry ice. C) Synthesis of ammonia from N$_{2}$ and H$_{2}$. D) Dissociation of CaSO$_{4(s)}$ to CaO$_{(s)}$ and SO$_{3(g)}$. Show Answer Correct Answer: C) Synthesis of ammonia from N$_{2}$ and H$_{2}$. 24. What name is given to the boundary that does not allow heat to flow thru it? A) Isobaric. B) Isochoric. C) Isothermal. D) Adiabetic. Show Answer Correct Answer: D) Adiabetic. 25. Correct Meyer's relation A) Cp-Cv = R. B) Cv-Cp = R. C) Cv+Cp = R. D) None of the above. Show Answer Correct Answer: A) Cp-Cv = R. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 1Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 2Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 3Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 4Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 5Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 6Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 7Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 8Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 9Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books