This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When water is cooled from 15$^\circ$C to 10$^\circ$C, what is the change in temperature? A) 10 $^\circ$C. B) 5 $^\circ$C. C) 15 $^\circ$C. D) -5 $^\circ$C. Show Answer Correct Answer: D) -5 $^\circ$C. 2. Sugar in water is an example for A) Homogeneous system. B) Heterogeneous system. C) Macroscopic system. D) Isolated system. Show Answer Correct Answer: A) Homogeneous system. 3. 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) Free expansion. B) Friction. C) Heat transfer. D) Free flow. Show Answer Correct Answer: D) Free flow. 4. 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. 5. In which of the following systems, neither matter nor heat is exchanged between system and surrounding? A) Open system. B) Closed system. C) Isolated system. D) None of the above. Show Answer Correct Answer: C) Isolated system. 6. Thermodynamics is the study of what? A) The transfer of energy. B) The creation of energy. C) The speed of reactions. D) The affect of heat on the speed of a reaction. Show Answer Correct Answer: A) The transfer of energy. 7. Mira is conducting an experiment in her physics lab and learns that in a reversible process, the integral of $\frac{dQ}{T}$ A) Enthalpy. B) Internal energy. C) Entropy. D) Flow energy. Show Answer Correct Answer: C) Entropy. 8. 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. 9. How many Joules of energy are required to change 10 gram of liquid water from 20 C to 90 C? A) 1463 J. B) 2926 J. C) 29, 260 J. D) 14, 630 J. Show Answer Correct Answer: B) 2926 J. 10. 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. 11. 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. 12. 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. 13. As water in a freezer turns into ice, A) The water absorbs energy from the air in the freezer. B) The water absorbs the coldness from the air in the freezer. C) The freezer air absorbs heat from the water. D) The water neither absorbs nor releases energy. Show Answer Correct Answer: C) The freezer air absorbs heat from the water. 14. 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) 1, 459, 250, 000 J. B) 70, 717, 500 J. C) 112, 250 J. D) -70, 717, 500 J. Show Answer Correct Answer: B) 70, 717, 500 J. 15. 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. 16. Neither mass or energy can be created or destroyed. A) First Law of Thermodynamics. B) Second Law of Thermodynamics. C) Murphy's Law. D) DeWeese's Law. Show Answer Correct Answer: A) First Law of Thermodynamics. 17. From lowest entropy to highest entropy, the states of matter go in this order: A) Solid $\rightarrow$ liquid $\rightarrow$ gas $\rightarrow$ plasma. B) Plasma $\rightarrow$ gas $\rightarrow$ liquid $\rightarrow$ solid. C) Gas $\rightarrow$ plasma $\rightarrow$ liquid $\rightarrow$ solid. D) Solid $\rightarrow$ liquid $\rightarrow$ plasma $\rightarrow$ gas. E) It depends on the temperature of the object. Show Answer Correct Answer: A) Solid $\rightarrow$ liquid $\rightarrow$ gas $\rightarrow$ plasma. 18. When calcium reacts with water, the temperature changes from 18$^\circ$C to 39$^\circ$C. Which statement is correct? A) The solution at the end is acidic. B) The reaction is reversible. C) The reaction is exothermic. D) The reaction is endothermic. Show Answer Correct Answer: C) The reaction is exothermic. 19. 1st Law of thermodynamics is the conservation of A) Radiation energy. B) Heat energy. C) Electric energy. D) Magnetic energy. Show Answer Correct Answer: B) Heat energy. 20. The quantity of heat required to raise the temperature of a substance (solid, liquid or gas) by one degree is called its A) Enthalpy. B) Entropy. C) Heat capacity. D) Free energy. Show Answer Correct Answer: C) Heat capacity. 21. Which phase change is endothermic? A) Evaporating. B) Condensation. C) Freezing. D) All phase changes are endothermic. Show Answer Correct Answer: A) Evaporating. 22. Which of the following statements is most accurate? A) When liquid water is heated, the molecules move faster. B) When liquid water is heated, the molecules collide more often. C) When liquid water is heated, collisions between molecules are more violent. D) All of the statements are accurate. Show Answer Correct Answer: D) All of the statements are accurate. 23. Endothermic reactions feel A) Warm. B) Cold. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cold. 24. 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. 25. 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. ← 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