This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. PCl5(g) + 67 kJ $\rightarrow$ PCl3(g) + Cl2(g) A) Exothermic reaction. B) Endothermic reaction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Endothermic reaction. 2. Heat change at constant pressure is A) U. B) $\Delta$U. C) H. D) $\Delta$H. Show Answer Correct Answer: D) $\Delta$H. 3. ..... is not a state variable A) Pressure. B) Volume. C) Temperature. D) Heat. Show Answer Correct Answer: D) Heat. 4. Which of the following is true for a discharging tank? A) The process is quasi-static. B) The process is adiabatic. C) DQ=0. D) All of the mentioned. Show Answer Correct Answer: D) All of the mentioned. 5. Entropy is a form of energy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. The equation for the second law of thermodynamics is: A) $\Delta S_{univ}=\Delta S_{sys}+\Delta S_{surr}<0$. B) $\Delta S_{univ}=\Delta S_{sys}+\Delta S_{surr}>0$. C) $\Delta S_{sys}=\Delta S_{univ}+\Delta S_{surr}>0$. D) $\Delta S_{surr}=\Delta S_{sys}+\Delta S_{univ}>0$. Show Answer Correct Answer: B) $\Delta S_{univ}=\Delta S_{sys}+\Delta S_{surr}>0$. 7. What happens to the internal energy of a system when it performs work on its surroundings without any heat exchange? A) The internal energy increases. B) The internal energy decreases. C) The internal energy remains constant. D) The internal energy becomes zero. Show Answer Correct Answer: B) The internal energy decreases. 8. Conversion of ice cube to water leads to A) Increase in Entropy. B) Decrese in Entropy. C) Remains same. D) None of the above. Show Answer Correct Answer: A) Increase in Entropy. 9. 2N$_{2}$O$_{5}$ $\rightarrow$ 4NO$_{2}$ + O$_{2 }$ $\Delta$H$_{f}$N$_{2}$O$_{5}$ 11.289 kJ/molNO$_{2 }$33.150 kJ/mol$_{}$O$_{2 }$0 kJ/mol $\Delta$Hreaction =? A) 110.022 kJ. B) 10.572 kJ. C) 121.311 kJ. D) 21.861 kJ. Show Answer Correct Answer: A) 110.022 kJ. 10. Someone sits near a fire in a fireplace and becomes warmer. This is an example of: A) Convection. B) Conduction. C) Radiation. D) None of the above. Show Answer Correct Answer: C) Radiation. 11. The area under the temperature-entropy curve (T-s curve) of any thermodynamic process represents A) Heat absorbed. B) Heat rejected. C) Either (a) or (b). D) None of these. Show Answer Correct Answer: C) Either (a) or (b). 12. Myra is trying to understand how a refrigerator works. She learns that it needs to remove heat from a cold body at 5 degree celsius to a surrounding at 35 degree celsius. What is its COP? A) 3. B) 0.93. C) 9. D) 9.3. Show Answer Correct Answer: D) 9.3. 13. Which of the following is the extensive property of a thermodynamic system? A) Pressure. B) Volume. C) Temperature. D) Density. Show Answer Correct Answer: B) Volume. 14. The first law of thermodynamics is basically the same as which law from physics 1? A) Newton's first law. B) The law of conservation of energy. C) The law of conservation of momentum. D) Newton's second law. Show Answer Correct Answer: B) The law of conservation of energy. 15. Which has the MOST thermal energy? A) HUGE iceberg, the size of a small town. B) Ice cube. C) Cup of hot coffee. D) 5 gallon bucket of room temperature water. Show Answer Correct Answer: A) HUGE iceberg, the size of a small town. 16. The more molecules an object contains, the more heat energy it has A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Which law of thermodynamics establishes absolute zero as the temperature at which the entropy of a system is zero? A) 1st law. B) 2nd law. C) 3rd law. D) Zeroth law. Show Answer Correct Answer: C) 3rd law. 18. For a closed system, energy can be transferred across the boundary via heat and work transfer. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. An open system A) Is a specified region where transfers of energy and/or mass take place. B) Is a region of constant mass and only energy is allowed to cross the boundaries. C) Cannot transfer either energy or mass to or from the surroundings. D) Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant. E) None of the above. Show Answer Correct Answer: D) Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant. 20. Which is a true statement about energy conversion? A) One form of energy cannot be converted into another form of energy. B) Heat can be converted other forms of energy only if caloric is present. C) There is no relationship between heat and work. D) Heat can be converted into other forms of energy. Show Answer Correct Answer: D) Heat can be converted into other forms of energy. 21. What is the term for the measure of disorder or randomness in a system, which tends to increase according to the second law of thermodynamics? A) Enthalpy. B) Entropy. C) Energy. D) Equilibrium. Show Answer Correct Answer: B) Entropy. 22. A(n) ..... is a device for measuring temperature. A) Thermometer. B) Barometer. C) Anemometer. D) Psychrometer. Show Answer Correct Answer: A) Thermometer. 23. What is the term for the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius? A) Heat capacity. B) Specific heat capacity. C) Thermal conductivity. D) Enthalpy. Show Answer Correct Answer: B) Specific heat capacity. 24. What name is given to the process that takes place at constant volume A) Isobaric. B) Isochoric. C) Isothermal. D) Adiabetic. Show Answer Correct Answer: B) Isochoric. 25. Can two isothermal curves cut each other? A) Yes. B) Never. C) Yes, during critical pressure. D) They can cut when temperature is 0$^{0}$C. Show Answer Correct Answer: B) Never. ← 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