This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Mira is conducting an experiment in her physics lab and learns that in a reversible process, the integral of $\frac{dQ}{T}$ A) Flow energy. B) Enthalpy. C) Entropy. D) Internal energy. Show Answer Correct Answer: C) Entropy. 2. A second-order reaction is characterized by: A) A linear relationship between concentration and rate. B) The rate is proportional to the square of the concentration. C) The rate is inversely proportional to the concentration. D) The rate is independent of concentration. Show Answer Correct Answer: B) The rate is proportional to the square of the concentration. 3. How many Joules of energy are required to change 10 gram of liquid water from 20 C to 90 C? A) 1463 J. B) 14, 630 J. C) 29, 260 J. D) 2926 J. Show Answer Correct Answer: D) 2926 J. 4. True/False:The rate of a chemical reaction is unrelated to the spontaneity of the reaction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. In a closed system, the total entropy can never decrease over time. Which law of thermodynamics does this statement describe? A) 1st law of thermodynamics. B) 2nd law of thermodynamics. C) 3rd law of thermodynamics. D) Zeroth Law. Show Answer Correct Answer: B) 2nd law of thermodynamics. 6. Water boiling in a pot without a lid is an example of ..... system. A) Open. B) Closed. C) Isolated. D) None of the above. Show Answer Correct Answer: A) Open. 7. As water in a freezer turns into ice, A) The water neither absorbs nor releases energy. B) The water absorbs energy from the air in the freezer. C) The water absorbs the coldness from the air in the freezer. D) The freezer air absorbs heat from the water. Show Answer Correct Answer: D) The freezer air absorbs heat from the water. 8. What is the heat energy generated/emitted by the metal when a 250 kg lump of iron cools from 650$^\circ$ C to 20$^\circ$ C? Specific heat of iron is 449 J/kgC. A) -70, 717, 500 J. B) 1, 459, 250, 000 J. C) 70, 717, 500 J. D) 112, 250 J. Show Answer Correct Answer: C) 70, 717, 500 J. 9. In a thermodynamic experiment, Tisha observed the cyclic integral of $\frac{dQ}{T}$ A) Greater than or equal to. B) Less than or equal to. C) Greater than. D) None of the above. Show Answer Correct Answer: B) Less than or equal to. 10. Neither mass or energy can be created or destroyed. A) First Law of Thermodynamics. B) DeWeese's Law. C) Second Law of Thermodynamics. D) Murphy's Law. Show Answer Correct Answer: A) First Law of Thermodynamics. 11. From lowest entropy to highest entropy, the states of matter go in this order: A) Solid $\rightarrow$ liquid $\rightarrow$ plasma $\rightarrow$ gas. B) Solid $\rightarrow$ liquid $\rightarrow$ gas $\rightarrow$ plasma. C) It depends on the temperature of the object. D) Plasma $\rightarrow$ gas $\rightarrow$ liquid $\rightarrow$ solid. E) Gas $\rightarrow$ plasma $\rightarrow$ liquid $\rightarrow$ solid. Show Answer Correct Answer: B) Solid $\rightarrow$ liquid $\rightarrow$ gas $\rightarrow$ plasma. 12. When calcium reacts with water, the temperature changes from 18$^\circ$C to 39$^\circ$C. Which statement is correct? A) The reaction is exothermic. B) The reaction is endothermic. C) The reaction is reversible. D) The solution at the end is acidic. Show Answer Correct Answer: A) The reaction is exothermic. 13. 1st Law of thermodynamics is the conservation of A) Radiation energy. B) Heat energy. C) Magnetic energy. D) Electric energy. Show Answer Correct Answer: B) Heat energy. 14. The quantity of heat required to raise the temperature of a substance (solid, liquid or gas) by one degree is called its A) Heat capacity. B) Free energy. C) Enthalpy. D) Entropy. Show Answer Correct Answer: A) Heat capacity. 15. Which phase change is endothermic? A) Evaporating. B) Condensation. C) Freezing. D) All phase changes are endothermic. Show Answer Correct Answer: A) Evaporating. 16. Endothermic reactions feel A) Warm. B) Cold. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cold. 17. Which of the following describes the first law of thermodynamics? A) The increase in thermal energy equals the work done. B) Energy becomes less concentrated over time. C) All the above. D) None of the above. Show Answer Correct Answer: A) The increase in thermal energy equals the work done. 18. We can reverse a spontaneous process by intervening (eg applying heat, using distillation to separate mixtures). A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. 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. 20. The change in free energy for the biological system is A) Cannot be predicted. B) Zero. C) Positive. D) Negative. Show Answer Correct Answer: D) Negative. 21. Heat change at constant volume is A) $\Delta$U. B) $\Delta$H. C) U. D) H. Show Answer Correct Answer: A) $\Delta$U. 22. Which of the following is NOT an application of thermodynamics in daily life mentioned in the text? A) Solar panels. B) Car engines. C) Refrigerators. D) Power plants. Show Answer Correct Answer: A) Solar panels. 23. Pressure cooker is an example of ..... system. A) Open. B) Closed. C) Isolated. D) None of the above. Show Answer Correct Answer: B) Closed. 24. Why does temperature change always move from regions of hot to regions of cold? A) Because colder particles have more potential energy. B) Because this is the fastest, most efficient means of conducting thermal energy. C) Because kinetic energy is transferred in the collisions of particles. D) Because hotter particles can not slow down. Show Answer Correct Answer: C) Because kinetic energy is transferred in the collisions of particles. 25. The energy transit from one body to another is the result of a temperature difference between the two bodies A) Specific Heat. B) Power. C) Heat. D) Energy. Show Answer Correct Answer: C) Heat. 26. What is the meaning of compressed liquid or subcooled liquid? A) A substance that is about to vaporize. B) Water exists as a liquid that is already vaporised. C) Water exists as a liquid that is ready to be vaporised. D) A substance that is not about to vaporize. Show Answer Correct Answer: D) A substance that is not about to vaporize. 27. 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) 500 J. C) 700 J. D) 200 J. Show Answer Correct Answer: A) 300 J. 28. 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 involve heat exchange; adiabatic processes maintain constant temperature. C) Isothermal processes maintain constant temperature; adiabatic processes involve no heat exchange. D) Isothermal processes are irreversible; adiabatic processes are reversible. Show Answer Correct Answer: C) Isothermal processes maintain constant temperature; adiabatic processes involve no heat exchange. 29. 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. 30. 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. 31. 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) -100 J. B) 500 J. C) -300 J. D) 300 J. Show Answer Correct Answer: D) 300 J. 32. 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. 33. Heat transfer by conduction occurs when ..... A) Large numbers of atoms move from place to place. B) Electromagnetic waves travel from place to place through a vacuum. C) Atoms give off heat in the form of electromagnetic waves. D) Particles bump into each other. Show Answer Correct Answer: D) Particles bump into each other. 34. Calculate the entropy change involved in the conversion of 1 mole of ice at 273 K to water at the same temperature. A) 22.1 J K-1. B) 20 J K$^{-1}$. C) 43 J K$^{-1}$. D) 12.4 J K$^{-1}$. Show Answer Correct Answer: A) 22.1 J K-1. 35. A system in which energy can cross the boundary but mass cannot is: A) An open system. B) A fixed system. C) A closed system. D) An imaginary system. Show Answer Correct Answer: C) A closed system. 36. If the temperature of a gas increases and there is negative work done on the gas, then ..... A) There must be less heat added than the work done on the gas. B) This is an adiabatic process. C) The gas must be giving off heat to the environment. D) There must be heat added to the gas. Show Answer Correct Answer: D) There must be heat added to the gas. 37. 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) 70 J released. C) 70 J absorbed. D) 30 J absorbed. Show Answer Correct Answer: A) 30 J released. 38. 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. 39. How is temperature defined? A) Total energy per molecule. B) Potential energy per molecule. C) Average kinetic energy per molecule. D) Mechanical energy. Show Answer Correct Answer: C) Average kinetic energy per molecule. 40. 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$_{2}$. 41. What name is given to the boundary that does not allow heat to flow thru it? A) Isothermal. B) Adiabetic. C) Isobaric. D) Isochoric. Show Answer Correct Answer: B) Adiabetic. 42. 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. 43. A student is investigating the best method for heating marshmallow using an open flame. The student quickly discovers placing the marshmallow over the flame is more effective than heating the marshmallow on the side of the flame.According to this information, what type of heat transfer is present when the marshmallow is above the fire that is not present when the marshmallow is on the side of the fire? A) Convection. B) Radiation. C) Conduction. D) Entropy. Show Answer Correct Answer: A) Convection. 44. By the Zeroth law of Thermodynamics, the thermodynamic variable whose value is equal for two systems in thermal equilibrium is A) Mass. B) Volume. C) Temperature. D) Pressure. Show Answer Correct Answer: C) Temperature. 45. Intensive properties are A) Mass dependent. B) Mass independent. C) All the above. D) None of the above. Show Answer Correct Answer: B) Mass independent. 46. What does "$\Delta$T" mean? A) A change in health. B) A change in temperature. C) A change in heat. D) A change in height. Show Answer Correct Answer: B) A change in temperature. 47. If 0Kelvin =-273$^{o}$C, what is 273Kelvin in degrees? A) 0 degrees Celsius. B) 200 degrees Celsius. C) 100 degrees Celsius. D) 546 degrees Celsius. Show Answer Correct Answer: A) 0 degrees Celsius. 48. True or False:A flowing stream has less entropy than a calm lake. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 49. What is the ideal gas law equation? A) PV = nR. B) P = nRT/V. C) PV = RT. D) PV = nRT. Show Answer Correct Answer: D) PV = nRT. 50. Samuel, Aiden, and Isla are working on a chemistry project. They need to calculate the Gibbs Free Energy of a chemical reaction. What information do they need to perform this calculation? A) The enthalpy of the reaction. B) The 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. 51. What is an example of the Second Law of Thermodynamics in daily life? A) Using a refrigerator to move heat from inside to outside. B) An ice cube melting at room temperature. C) Converting fuel into mechanical energy in a car engine. D) Generating electricity in a power plant. Show Answer Correct Answer: B) An ice cube melting at room temperature. 52. Energy in exothermic reactions are A) Released. B) Absorbed. C) All the above. D) None of the above. Show Answer Correct Answer: A) Released. 53. How are solids different from liquids? A) Particles in solids have more motion than in liquids. B) Particles in solids have no motion. C) Particles in solids are moving freely around each other. D) Particles in solids are vibrating in place. Show Answer Correct Answer: D) Particles in solids are vibrating in place. 54. A condition in which all parts of a system are at the same temperature? A) Thermal equilibrium. B) Thermal expansion. C) Temperature. D) Thermodynamics. Show Answer Correct Answer: A) Thermal equilibrium. 55. This law states that the energy in the universe is constant. Energy cannot be created nor destroyed but changed from one form to another. Which law is this? A) Third Law of thermodynamics. B) Second Law of thermodynamics. C) First Law of thermodynamics. D) None of the above. Show Answer Correct Answer: C) First Law of thermodynamics. 56. Dragging an object across a rough surface makes it warm, or even hot. The temperature increase occurs because of A) Work. B) Heat. C) Thermal. D) Both work and heat. Show Answer Correct Answer: A) Work. 57. In an adiabatic process, what equals zero? A) $\Delta$U. B) W. C) Q. D) T. Show Answer Correct Answer: C) Q. 58. The theoretical (Carnot) efficiency of a heat engine operating between 600$^\circ$C and 100$^\circ$C is: A) 57.3%. B) 83.3%. C) 16.7%. D) 42.7%. Show Answer Correct Answer: A) 57.3%. 59. Boiling point of water in Fahrenheit: A) 0. B) 212. C) 32. D) 100. Show Answer Correct Answer: B) 212. 60. A student is preparing to take a bath when she realizes the hot water tap in the bathroom is not working. The student goes to the kitchen and prepares 10 Lof 100$^\circ$ C water to mix with 90 L of 10$^\circ$ C water. What will be the final temperature of the bath water? A) 55$^\circ$ C. B) 19$^\circ$ C. C) 110$^\circ$ C. D) -1.25$^\circ$ C. Show Answer Correct Answer: B) 19$^\circ$ C. ← 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