This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements is true about an isentropic process? A) An isentropic process is an irreversible adiabatic process. B) An isentropic process is a reversible isothermal process. C) An isentropic process is an irreversible isothermal process. D) An isentropic process is a reversible adiabatic process. Show Answer Correct Answer: D) An isentropic process is a reversible adiabatic process. 2. Adding energy into a system A) Exergonic. B) Endergonic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Endergonic. 3. Equal amount of same gas in two similar cylinders A and B, compressed to same final volume from same initial volume one adiabatically and another isothermally, respectively, then A) The final pressure in A is more than in B. B) The final pressure in B is greater than in A. C) The final pressure in both is equal. D) For the gas, value of $\gamma=\frac{C_p}{C_v}$. Show Answer Correct Answer: A) The final pressure in A is more than in B. 4. What information do we need to perform a calculation of Gibbs Free Energy? A) Enthalpy of the reaction. B) Entropy of the reaction. C) The temperature of the reaction in Kelvin. D) All of the above are needed. Show Answer Correct Answer: D) All of the above are needed. 5. The transfer of energy from one system to another A) Temperature. B) Internal energy. C) Heat. D) None of the above. Show Answer Correct Answer: C) Heat. 6. What happens to the internal energy of a system when work is done on it and heat is added? A) It depends on the mass of the system. B) It decreases. C) It increases. D) It remains the same. Show Answer Correct Answer: C) It increases. 7. In which system will there be a decrease in entropy as bromine undergoes a change in phase? A) Br$_{2}$(s) $\rightarrow$ Br$_{2}$(g). B) Br$_{2}$(l) $\rightarrow$ Br$_{2}$(g). C) Br$_{2}$(g) $\rightarrow$ Br$_{2}$(l). D) Br$_{2}$(s) $\rightarrow$ Br$_{2}$(l). Show Answer Correct Answer: C) Br$_{2}$(g) $\rightarrow$ Br$_{2}$(l). 8. Silicon sealed steel cylinder containing liquid nitrogen is an example of ..... system. A) Open. B) Closed. C) Isolated. D) None of the above. Show Answer Correct Answer: C) Isolated. 9. A carnot engine operates between 227$^{o}$ C and 127$^{o}$ C. The efficiency of the engine is A) 10%. B) 40%. C) 20%. D) 50%. Show Answer Correct Answer: C) 20%. 10. Which law of thermodynamics is also known as the Law of Energy Conservation? A) Second Law. B) Zeroth Law. C) Third Law. D) First Law. Show Answer Correct Answer: D) First Law. 11. If the pressure is 10 bar and gas is expanded form 10 L to 100 LWork done will be A) -900 barL. B) 0. C) +900 bar L. D) 1100. Show Answer Correct Answer: A) -900 barL. 12. Evelyn, Elijah, and Hannah are studying for a chemistry test. They come across a question:'What does Gibbs Free Energy tell us in the context of a chemical reaction, such as the rusting of iron?' A) It tells us how much energy is given off by the rusting of iron. B) It tells us the tendency of the rusting of iron to become "random" . C) It tells us how spontaneous the rusting of iron is. D) None of the above. Show Answer Correct Answer: C) It tells us how spontaneous the rusting of iron is. 13. The symbol of Helmholtz free energy is ..... A) B. B) A. C) H. D) E. Show Answer Correct Answer: B) A. 14. A piston-cylinder device contains a liquid-vapor mixture of water at 300 K. During a constant-pressure process, 750 kJ of heat is transferred to the water. As a result, part of the liquid in the cylinder vaporizes. Determine the entropy change of the water during this process. A) 40 K/kJ. B) 0.4 K/kJ. C) 2.5 kJ/K. D) 25 kJ/K. Show Answer Correct Answer: C) 2.5 kJ/K. 15. Which of the following types of reactions would decrease the entropy within a cell? A) Respiration. B) Digestion. C) Anabolic reactions. D) Catabolic reactions. Show Answer Correct Answer: C) Anabolic reactions. 16. Describe the relationship between pressure, volume, and temperature in gases. A) Pressure, volume, and temperature in gases are related by the ideal gas law:PV = nRT. B) Pressure and volume are independent of temperature. C) Temperature has no effect on gas behavior. D) Increasing volume always increases pressure. Show Answer Correct Answer: A) Pressure, volume, and temperature in gases are related by the ideal gas law:PV = nRT. 17. A process where volume of a system remain same is A) Isothermal Process. B) Adiabatic Process. C) Isobaric Process. D) Isochoric Process. Show Answer Correct Answer: D) Isochoric Process. 18. Thermal energy always travels from ..... temperatures to ..... temperatures. A) Higher / Lower. B) Lower / Higher. C) Higher / Higher. D) None of the above. Show Answer Correct Answer: A) Higher / Lower. 19. Which of the following statements is NOT a correct assumption of the kinetic theory of an ideal gas? A) The molecules are in random motion. B) The volume of the molecules is negligible compared with the volume occupied by the gas. C) The molecules obey Newton's laws of motion. D) The collisions between molecules are inelastic. Show Answer Correct Answer: D) The collisions between molecules are inelastic. 20. How does radiation allow for heat transfer? A) By increasing the disorder in a system. B) Through the direct contact of two objects. C) By the movement of fluids or gases. D) By the emission or absorption of electromagnetic radiation. Show Answer Correct Answer: D) By the emission or absorption of electromagnetic radiation. 21. $\Delta$H value in an exothermic reaction is a positive number. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. A closed system, with no change in KE and PE, is called A) Stationary System. B) Flow System. C) Control Volume. D) Isolated system. Show Answer Correct Answer: A) Stationary System. 23. In an endothermic reaction, the enthalpy change ($\Delta$H) is: A) Zero. B) Undefined. C) Positive. D) Negative. Show Answer Correct Answer: C) Positive. 24. The first law of thermodynamics is a restatement of the A) Zeroth law of thermodynamics. B) Conservation of energy. C) Principle of entropy. D) Law of heat addition. Show Answer Correct Answer: B) Conservation of energy. 25. What is the name of a device that converts thermal energy into work? A) Entropy. B) Heating system. C) Heat engine. D) Power. Show Answer Correct Answer: C) Heat engine. 26. Which best describes ENTROPY? A) Useful heat energy needed to drive an engine. B) Heat that can be stored to be used at a later date. C) Random energy that escapes from the system. D) A state of order in a physical system. Show Answer Correct Answer: C) Random energy that escapes from the system. 27. Riyaan is conducting an experiment to understand the first law of thermodynamics. Which of the following is not the limitation of the first law of thermodynamics? A) Can not find the possibility of a process. B) Can not find the amount of energy transfer. C) Does not differentiate the forms of energy. D) None of the above. Show Answer Correct Answer: B) Can not find the amount of energy transfer. 28. Transfer of heat by contact and collisions between the molecules in a substance. A) Conduction. B) Radiation. C) Convection. D) None of the above. Show Answer Correct Answer: A) Conduction. 29. Entropy of a system increases when a reaction increases the number of particles. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 30. A) When a solid melts, there is A) An increase in enthalpy. B) A decrease in internal energy. C) An increase in entropy. D) Nothing can be predicted. Show Answer Correct Answer: C) An increase in entropy. 31. Given the following information, calculate $\Delta$G$^{0}$ for the reaction below at 25$^{0}$C:(K = $^{0}$C + 273)SnCl$_{4}$(l) + 2 H$_{2}$0(l) $\rightarrow$ SnO$_{2}$(S) + 4HCl(g), $\Delta$H$^{0}$=133.0 kJ and $\Delta$S$^{0}$ =401.5 J/K A) -13.4 kJ. B) -252.6 kJ. C) 252.6 kJ. D) 13.4 kJ. Show Answer Correct Answer: D) 13.4 kJ. 32. Consider the following statements(Assertion) The internal energy of an ideal gas does not change during an Isothermal process(Reason) The decrease in the volume of the gas is compensated by a corresponding increase in pressure when its temperature is constant in accordance with Boyle law. A) Both A & R are true and R is correct Explanation of A. B) Both A & R are true and R is not correct Explanation of A. C) A is true R is false. D) A is false but R is true. Show Answer Correct Answer: A) Both A & R are true and R is correct Explanation of A. 33. Explain the concept of thermal equilibrium. A) Thermal equilibrium occurs when bodies are at different temperatures. B) Thermal equilibrium is the state in which two or more bodies in thermal contact have the same temperature, resulting in no net heat flow between them. C) Thermal equilibrium is achieved only in a vacuum environment. D) Thermal equilibrium is the process of heat transfer from one body to another. Show Answer Correct Answer: B) Thermal equilibrium is the state in which two or more bodies in thermal contact have the same temperature, resulting in no net heat flow between them. 34. Entropy is a measure of the number of ways in which energy is distributed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. The standard fixed point of the thermometry is the A) Boiling point water. B) Triple point of water. C) Ice point. D) Sulphur point. Show Answer Correct Answer: B) Triple point of water. 36. The transfer of thermal energy between objects of different temperatures is called ..... A) Temperature. B) Heat. C) Internal energy. D) None of these. Show Answer Correct Answer: B) Heat. 37. Which of the following statements best describes the first law of thermodynamics? A) Energy can be created or destroyed, but not transformed. B) Energy can be transformed, but not created or destroyed. C) Energy can be created and destroyed, but not transformed. D) Energy cannot be created, destroyed, or transformed. Show Answer Correct Answer: B) Energy can be transformed, but not created or destroyed. 38. The first person to liquify hydrogen is A) Farady. B) Dewar. C) Linde. D) Kapitza. Show Answer Correct Answer: B) Dewar. 39. A gas in a closed container is heated with 10J of energy, causing the lid of the container to rise 2m with 3N of force. What is the total change in energy of the system? A) 10J. B) 8J. C) 4J. D) 6J. E) -4J. Show Answer Correct Answer: C) 4J. 40. Study of how heat moves is called ..... A) Thermodynamics. B) Thermometer. C) Thermal expansion. D) Heat energy. Show Answer Correct Answer: A) Thermodynamics. 41. How much energy is required to convert 3 kg of water at 20$^\circ$C to steam at 100$^\circ$C? (The specific heat of water is 4.184 J/g$^\circ$C and the latent heat of vaporization is 2257 J/g) A) 9, 100, 000 J. B) 1, 100 J. C) 7, 800, 000 J. D) 730, 000 J. Show Answer Correct Answer: C) 7, 800, 000 J. 42. According to the first law of thermodynamics, energy cannot be created or destroyed, only ..... A) Transferred and transformed. B) Increased and decreased. C) Stored and released. D) Measured and calculated. Show Answer Correct Answer: A) Transferred and transformed. 43. Macroscopic Thermodynamics is related to A) Molecular dimension. B) System as a bulk. C) Both are true. D) None of the above. Show Answer Correct Answer: B) System as a bulk. 44. One calorie is equal to A) The amount of energy required to change the temperature of one gram of water by one degree Celsius. B) 4.186 Joules. C) 0.001 kilocalories. D) All of the above. Show Answer Correct Answer: D) All of the above. 45. The pressure relative to the atmospheric pressure is called as ..... A) Absolute Pressure. B) Vacuum Pressure. C) Atmospheric Pressure. D) Gauge Pressure. Show Answer Correct Answer: D) Gauge Pressure. 46. The state of entropy of the entire universe, as an isolated system, will always increase over time. A) Zeroth Law of Thermodynamics. B) Second Law of Thermodynamics. C) Third Law of Thermodynamics. D) First Law of Thermodynamics. Show Answer Correct Answer: B) Second Law of Thermodynamics. 47. The first law of thermodynamics is basically the same as which law? A) The law of conservation of momentum. B) Newton's second law. C) The law of conservation of energy. D) Newton's first law. Show Answer Correct Answer: C) The law of conservation of energy. 48. Engine A and B are working between same temperature limits and A is reversible then:$\eta_A>\eta_B$ A) Clausius' Theorem. B) Clausius' inequality. C) Carnot's theorem. D) Corollary of Carnot's theorem. Show Answer Correct Answer: C) Carnot's theorem. 49. Which law of thermodynamics implies that it is impossible to reach absolute zero temperature? A) Zeroth Law. B) 1st law of thermodynamics. C) 2nd law of thermodynamics. D) 3rd law of thermodynamics. Show Answer Correct Answer: D) 3rd law of thermodynamics. 50. In the formula of The First Law of Thermodynamics, the ''W" represent: A) Work done on or by the system. B) Change in internal energy. C) Energy transferred as heat. D) None of the above. Show Answer Correct Answer: A) Work done on or by the system. 51. For open system we deals with A) Lagrangian concept. B) Eulerial concept. C) All the above. D) None of the above. Show Answer Correct Answer: B) Eulerial concept. 52. Which is an example of the 0th law? A) 0 Kelvin. B) U = W-q. C) Chaos cannot decrease. D) A=B=C. Show Answer Correct Answer: D) A=B=C. 53. In a closed system, if 50 J of heat is added and 20 J of work is done by the system, what is the change in internal energy according to the first law of thermodynamics? A) 70 J. B) 50 J. C) 20 J. D) 30 J. Show Answer Correct Answer: D) 30 J. 54. Which one of the following statements concerning an ideal engine is true? A) The entropy of the system decreases with time. B) No heat transfer occurs between the system and its surroundings. C) All system processes are reversible. D) The temperature of the system is usually constant. E) The system cannot be used to perform work. Show Answer Correct Answer: C) All system processes are reversible. 55. What is the equation for the first law of thermodynamics? A) $\Delta U=Q-W$. B) $Q=\Delta U+W$. C) $W=\Delta U-Q$. D) $W=Q-\Delta U$. Show Answer Correct Answer: C) $W=\Delta U-Q$. 56. When water is cooled from 15$^\circ$C to 10$^\circ$C, what is the change in temperature? A) 5 $^\circ$C. B) -5 $^\circ$C. C) 15 $^\circ$C. D) 10 $^\circ$C. Show Answer Correct Answer: B) -5 $^\circ$C. 57. Sugar in water is an example for A) Homogeneous system. B) Heterogeneous system. C) Isolated system. D) Macroscopic system. Show Answer Correct Answer: A) Homogeneous system. 58. In a physics class, Eshaan is trying to understand the factors that contribute to irreversibility. He asks his classmates, "Which of the following factors does not cause irreversibility?" A) Friction. B) Heat transfer. C) Free expansion. D) Free flow. Show Answer Correct Answer: D) Free flow. 59. The molecules in warm objects move A) Slowly. B) Faster. C) Not at all. D) Out of this world. Show Answer Correct Answer: B) Faster. 60. Thermodynamics is the study of what? A) The speed of reactions. B) The affect of heat on the speed of a reaction. C) The creation of energy. D) The transfer of energy. Show Answer Correct Answer: D) The transfer of energy. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books