This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part I > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 1 J = ..... calorie A) 0.2389. B) 4.2. C) 0.2. D) 4.186. Show Answer Correct Answer: A) 0.2389. 2. Work done in case of isothermal free expansion A) Zero. B) Negative. C) Maximum. D) Minimum. Show Answer Correct Answer: A) Zero. 3. The internal energy of an ideal gas depends on A) Volume and temperature. B) Pressure and temperature. C) Volume. D) Temperature only. Show Answer Correct Answer: D) Temperature only. 4. For the process at 25$^{0}$C:I$_{2}$(g) $\rightarrow$I$_{2}$(s). What are the signs for $\Delta$G, $\Delta$H and $\Delta$S? A) $\Delta$G-$\Delta$H + $\Delta$S +. B) $\Delta$G-$\Delta$H-$\Delta$S-. C) $\Delta$G + $\Delta$H-$\Delta$S-. D) $\Delta$G-$\Delta$H + $\Delta$S +. Show Answer Correct Answer: B) $\Delta$G-$\Delta$H-$\Delta$S-. 5. Sum of the kinetic and potential energy of the particles that make up an object. A) Thermal energy. B) Heat. C) Specific heat. D) Thermal insulator. E) Temperature. Show Answer Correct Answer: A) Thermal energy. 6. Temperature of ice A) Ice can't have a temperature. B) 0 degees Celsius. C) Anything less than 0 degrees Celsius. D) 0-99 degees Celsius. Show Answer Correct Answer: C) Anything less than 0 degrees Celsius. 7. The molecules in cold objects move A) Slowly. B) Faster. C) Not at all. D) Out of this world. Show Answer Correct Answer: A) Slowly. 8. A concept that addresses the conservation of energy A) 3rd law of thermodynamics. B) 2nd law of thermodynamics. C) 1st law of thermodynamics. D) Zeroth Law. Show Answer Correct Answer: C) 1st law of thermodynamics. 9. Is a raindrop falling to the ground a spontaneous or nonspontaneous process? A) Spontaneous. B) Nonspontaneous. C) All the above. D) None of the above. Show Answer Correct Answer: B) Nonspontaneous. 10. A system which contains single phase is called A) Heterogenous. B) Homogenous. C) Isolated. D) All of these. Show Answer Correct Answer: B) Homogenous. 11. Thermal Energy is ..... A) The internal energy of an object. B) The temperature of a solid object. C) Heat transfer through a liquid. D) None of the above. Show Answer Correct Answer: A) The internal energy of an object. 12. How much heat is needed to form 41.07 g of NO$_{2}$?N$_{2}$+ 2O$_{2}$ $\rightarrow$ 2NO$_{2}$$\Delta$H = +67kJ A) 58.2 kJ. B) 19.6. C) 59.8. D) 29.9. Show Answer Correct Answer: D) 29.9. 13. Temperature is ..... A) The measure of the average kinetic energy of the molecules of an object. B) The amount of thermal energy it takes to raise one gram of a substance by one degree Celsius. C) An object's internal energy. D) None of the above. Show Answer Correct Answer: A) The measure of the average kinetic energy of the molecules of an object. 14. Which one of the following phrases correctly describes an adiabatic process? A) No change in system pressure occurs. B) No change in temperature occurs. C) No transfer of energy as heat. D) No change in system volume occurs. E) No loss of energy occurs. Show Answer Correct Answer: C) No transfer of energy as heat. 15. Which of the following descriptions explains the process of water freezing? A) Water molecules are squeezed together by high pressure until they begin to stick to one another. B) Water molecules slow down until they begin to bond together. C) Water molecules speed up until they escape into a different phase. D) As water molecules cool, their shape changes from rounded to irregular, making them more likely to link to one another. Show Answer Correct Answer: B) Water molecules slow down until they begin to bond together. 16. Which situation best represents convection? A) Heat from a campfire. B) A hot air balloon taking off. C) Touching a hot piece of metal. D) Getting sunburned. Show Answer Correct Answer: B) A hot air balloon taking off. 17. An isochoric process is one in which: A) Temperature remains constant. B) Pressure remains constant. C) Entropy remains constant. D) Volume remains constant. Show Answer Correct Answer: D) Volume remains constant. 18. A set of seperate bodies that form a whole A) Heat. B) System. C) Temperature. D) None of the above. Show Answer Correct Answer: B) System. 19. What does R stand for A) Temperature constant. B) Ideal gas constant. C) Real gas constant. D) Ideal gas law. Show Answer Correct Answer: B) Ideal gas constant. 20. A 200ml of water is heated by the burning of a biscuit.If he $\Delta$T=45.6$^{0}$C and the change in mass of the biscuit, $\Delta$m =5.35g.Find the enthalpy of the biscuit in kJ/g. (Q=mc$\Delta$T) A) 7126. B) 7.13. C) 38.12. D) 71.3. Show Answer Correct Answer: B) 7.13. 21. The specific heat of water is 4.18 J/g$^\circ$C.If 980. J of energy is added to 6.20 g of water at 18.0 $^\circ$C, what is the final temperature of the water? A) -19.8 $^\circ$C. B) 19.8 $^\circ$C. C) 37.8 $^\circ$C. D) 55.8 $^\circ$C. Show Answer Correct Answer: D) 55.8 $^\circ$C. 22. Part of universe which is chosen for thermodynamic study is called A) Surrounding. B) System. C) Both. D) None of the above. Show Answer Correct Answer: B) System. 23. If 100 g of aluminum at 145$^\circ$C gains 6, 800 J of heat, what is the final temperature (T$_{final}$) of the aluminum? Aluminum has a specific heat of 0.897 J/g$^\circ$C. (Q=mc$\Delta$T) A) -69$^\circ$C. B) 0.52$^\circ$C. C) 221$^\circ$C. D) None of the above. Show Answer Correct Answer: C) 221$^\circ$C. 24. The total change in the thermal energy of a system is the heat added to it minus the ..... the system. A) Entropy of. B) Temperature of. C) Kinetic energy of. D) Work done by. Show Answer Correct Answer: D) Work done by. 25. Which of the following is an intensive property of a thermodynamics systems? A) Mass. B) Energy. C) Temperature. D) Volume. Show Answer Correct Answer: C) Temperature. 26. The first law of thermodynamics states that energy is A) Created. B) Destroyed. C) Conserved. D) Created and destroyed. Show Answer Correct Answer: C) Conserved. 27. A) Thermodynamically temperature is A) Intensive property. B) Extensive property. C) Semi-Intensive property. D) None of the above. Show Answer Correct Answer: A) Intensive property. 28. What phase change brings an increase in entropy? A) G$\rightarrow$l. B) G$\rightarrow$s. C) L$\rightarrow$s. D) L$\rightarrow$g. Show Answer Correct Answer: D) L$\rightarrow$g. 29. Wiens law in radiation is applicable to A) Longer wavelengths. B) Shorter wavelengths. C) All wavelengths. D) None of the above. Show Answer Correct Answer: B) Shorter wavelengths. 30. You blow up a balloon and do not tie the end. When you let go the air flows out of the balloon. Why? A) The balloon is doing work. B) Energy is being concentrated. C) Entropy is decreasing. D) Entropy is increasing. Show Answer Correct Answer: D) Entropy is increasing. 31. Entropy is a measure of disorder in a system. According to the second law of thermodynamics, the entropy of an isolated system will: A) Always increase. B) Always decrease. C) Remain constant. D) Fluctuate randomly. Show Answer Correct Answer: A) Always increase. 32. Potential and Kinetic energy is also known as ..... A) Thermal energy. B) Geothermal energy. C) Mechanical energy. D) Kinesthetic. Show Answer Correct Answer: C) Mechanical energy. 33. An ice cube is placed on a table and begins to melt. The following conclusion can be made. A) Energy is being absorbed by the table which causes the cube to melt. B) Energy is being transferred from the table to the ice cube. C) Energy is being created by the air and table and making the cube heat up. D) None of the above. Show Answer Correct Answer: B) Energy is being transferred from the table to the ice cube. 34. What is an isothermal process? Give an example. A) An example of an isothermal process is the expansion of an ideal gas in a piston at a constant temperature. B) The compression of a gas at varying temperatures. C) The freezing of water at a constant temperature. D) The boiling of water at a constant pressure. Show Answer Correct Answer: A) An example of an isothermal process is the expansion of an ideal gas in a piston at a constant temperature. 35. The process ( $pv^n=const.$ A) 1. B) $\infty$. C) 1.4. D) 0. Show Answer Correct Answer: B) $\infty$. 36. Describe the Carnot cycle and its significance. A) The Carnot cycle is a theoretical thermodynamic cycle that defines the maximum efficiency of heat engines. B) The Carnot cycle is a refrigeration process that cools substances effectively. C) The Carnot cycle operates at 100% efficiency under all conditions. D) The Carnot cycle is a practical engine design used in modern vehicles. Show Answer Correct Answer: A) The Carnot cycle is a theoretical thermodynamic cycle that defines the maximum efficiency of heat engines. 37. The Fahrenheit scale is divided into ..... divisions A) 60. B) 120. C) 180. D) 90. Show Answer Correct Answer: C) 180. 38. Everything else outside the area of study A) System. B) Thermochemistry. C) Surroundings. D) Thermodynamics. Show Answer Correct Answer: C) Surroundings. 39. Describe the energy change that takes place when a chemical reaction occurs. A) Energy is given out. B) Energy is taken in. C) Energy is taken in and then given out. D) Energy is given out and then taken in. Show Answer Correct Answer: C) Energy is taken in and then given out. 40. Which is an example of a heat engine? A) Windmill. B) Solar panels. C) Volcano. D) Automobile engine. Show Answer Correct Answer: D) Automobile engine. 41. During phase change ..... does not change. A) Work. B) Temperature. C) Volume. D) Pressure. Show Answer Correct Answer: B) Temperature. 42. Which of the following forms would have the greatest standard molar entropy? A) H$_{2}$(l). B) H$_{2}$O(g). C) H$_{2}$O(l). D) H$_{2}$(g). Show Answer Correct Answer: B) H$_{2}$O(g). 43. In a spontaneous process, the entropy of the universe decreases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 44. Hess's Law allows us to calculate: A) The change in Gibbs free energy of a reaction. B) The change in enthalpy of a reaction. C) The change in entropy of a reaction. D) The change in temperature of a reaction. Show Answer Correct Answer: B) The change in enthalpy of a reaction. 45. The First Law of Thermodynamics indicates that A) Work is force exerted over a distance. B) Work is a state function. C) An increase in disorder is part of any spontaneous process. D) Energy is neither created not destroyed. Show Answer Correct Answer: D) Energy is neither created not destroyed. 46. Which of the following is true for a closed system? A) Mass entering = mass leaving. B) Mass does not enter or leave the system. C) Mass entering can be more or less than the mass leaving. D) None of the mentioned. Show Answer Correct Answer: B) Mass does not enter or leave the system. 47. Why does water heat heat up and cool down VERY SLOWLY? A) Low Specific Heat. B) High Specific Heat. C) It's solid. D) It's always cold. Show Answer Correct Answer: B) High Specific Heat. 48. A catalyst works by A) Changing the order of the reaction. B) Increasing the temperature. C) Lowering the activation energy. D) Decreasing the amount of product. Show Answer Correct Answer: C) Lowering the activation energy. 49. An open system allows the transfer of A) Only mass. B) Only Energy. C) Both mass and energy. D) Neither mass nor energy. Show Answer Correct Answer: C) Both mass and energy. 50. Which material would enable you to warm your hands the fastest according to the experiment? A) Mylar. B) Neoprene. C) HDPE. D) LDPE. Show Answer Correct Answer: A) Mylar. 51. Warming hand over a radiator. A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 52. Thermal Equilibrium is related to A) Pressure. B) Temperature. C) Volume. D) All of the above. Show Answer Correct Answer: B) Temperature. 53. This is the energy stored due to its elevation or position A) Heat. B) Internal Energy. C) Kinetic Energy. D) Potential Energy. Show Answer Correct Answer: D) Potential Energy. 54. It is the ratio of weight of object and volume of object A) Specific Heat. B) Specific Volume. C) Specific Gravity. D) Specific Weight. Show Answer Correct Answer: D) Specific Weight. 55. In an adiabatic process the work done is 50 KJ, what is its internal energy? A) -25 KJ. B) 25 KJ. C) 50 KJ. D) -50 KJ. Show Answer Correct Answer: D) -50 KJ. 56. In sign convention, work done BY THE SYSTEM is POSITIVE. Work done ON THE SYSTEM is NEGATIVE. A) Both Statements are True. B) 1st Statement-False2nd Statement-True. C) 1st Statement-True2nd Statement-False. D) Both Statements are False. Show Answer Correct Answer: A) Both Statements are True. 57. What is the thermodynamic property which is the reciprocal of density? A) Specific Weight. B) Specific Volume. C) Specific Gravity. D) Specific Heat. Show Answer Correct Answer: B) Specific Volume. 58. If heat added to the cycle is 40 kJ and the one rejected is 20 kJ then the efficiency of the cycle will be A) 100%. B) 60%. C) 50%. D) 40%. Show Answer Correct Answer: C) 50%. 59. As 120 g of hot milk cools in a mug, it transfers 20, 000 J of heat to the environment. What is the temperature change of the milk? The specific heat of milk is 2.6 J/g$^\circ$C. (Q=ms$\Delta$T) A) 640 $^\circ$C. B) 64 $^\circ$C. C) 1.56 $^\circ$C. D) Cannot be determined. Show Answer Correct Answer: B) 64 $^\circ$C. 60. Which of the following materials typically has the highest specific heat capacity? A) Aluminum. B) Copper. C) Water. D) Iron. Show Answer Correct Answer: C) Water. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books