This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 29 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Refer the the following question:2N$_{2}$ + 3H$_{2}$ $\rightarrow$ 2NH$_{3}$ + 46 kJHow much energy would be produced if 18.2 g of nitrogen reacted with excess hydrogen? A) 92 kJ. B) 0.143 kJ. C) 23 kJ. D) 15 kJ. Show Answer Correct Answer: D) 15 kJ. 2. The enthalpy of a reaction is the negative of the enthalpy of the reverse reaction. A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 3. What is the primary implication of the second law of thermodynamics in terms of entropy? A) Entropy of an isolated system always decreases. B) Entropy of an isolated system always increases. C) Entropy remains constant. D) Entropy is irrelevant. Show Answer Correct Answer: B) Entropy of an isolated system always increases. 4. The handle of a frying pan is often coated in rubber because rubber provides ..... A) Heat insulation. B) Heat conduction. C) A low melting point. D) A nonstick surface. Show Answer Correct Answer: A) Heat insulation. 5. Arjun and Scarlett are observing a chemical reaction in their chemistry class. They notice that the number of particles in the system increases during the reaction. Can they conclude that the entropy of the system also increases? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. An adiabatic process occurs at constant A) Temperature. B) Pressure. C) Heat. D) None of these. Show Answer Correct Answer: C) Heat. 7. Which of the following laws is applicable for the behaviour of perfect gas ..... A) Boyle's law. B) Charle's Law. C) Gas Lussac law. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. Value of gamma (cp/cv) for monaotomic gas is A) 1.44. B) 1.67. C) 2.09. D) 1.34. Show Answer Correct Answer: B) 1.67. 9. Identify the incorrect statement among the following.-A:Hess's Law states that the total enthalpy change for a reaction is the same, irrespective of the number of steps in the reaction.-B:According to Hess's Law, the enthalpy change of a reaction is directly proportional to the amount of reactants used.-C:It allows for the calculation of the enthalpy change of a reaction that is difficult to measure directly. A) A. B) B. C) C. D) None of the above. Show Answer Correct Answer: B) B. 10. When two bodies are in thermal equilibrium with a third body they are also in thermal equilibrium witheach other. This statement is called A) Zeroth law of thermodyamics. B) First law of thermodynamics. C) Second law of thermodynamics. D) Kelvin Planck's law. Show Answer Correct Answer: A) Zeroth law of thermodyamics. 11. The entropy(disorder) of the universe is always A) Increasing. B) Decreasing. C) Staying the same. D) None of the above. Show Answer Correct Answer: A) Increasing. 12. According to the first law of thermodynamics A) Heat flows from hot object to cold object. B) Heat pump is the most efficient. C) Heat and work are mutually convertible. D) None of the above. Show Answer Correct Answer: C) Heat and work are mutually convertible. 13. If external pressure is zero .the work done will be A) Negative. B) Positive. C) Zero. D) None of the above. Show Answer Correct Answer: C) Zero. 14. If 334000 J of heat is required to change state of 1 kg of ice into water then heat of fusion is A) 668000 J/kg. B) 334000 kg. C) 334000 J/kg. D) 668000 J. Show Answer Correct Answer: C) 334000 J/kg. 15. The temperature of the system reduces in an A) Adiabatic Compression. B) Isothermal Expansion. C) Isothermal compression. D) Adiabatic expansion. Show Answer Correct Answer: D) Adiabatic expansion. 16. Which one is true about energy form of macroscopic? A) Relates to molecular structure of a system. B) Dependent to some outside reference. C) Independant to outside reference frames. D) Relates to degree of molecular activity. Show Answer Correct Answer: B) Dependent to some outside reference. 17. Everything in the universe that is outside a defined system. A) Surroundings. B) Open system. C) Closed system. D) Thermodynamics. Show Answer Correct Answer: A) Surroundings. 18. In which type of process pressure remains constant? A) Isothermal process. B) Isochoric process. C) Isobaric process. D) Adiabatic process. Show Answer Correct Answer: C) Isobaric process. 19. Which is the best example of an object with only potential energy? A) Water being poured out of a pitcher. B) A ball being thrown across a field. C) A boulder resting on top of a cliff. D) A boat sailing through the water. Show Answer Correct Answer: C) A boulder resting on top of a cliff. 20. As heat energy increases, particle motion: A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increases. 21. When a gas undergoes isothermal expansion, its internal energy A) Increase. B) Decrease. C) Remains constant. D) Zero. Show Answer Correct Answer: C) Remains constant. 22. Which type of system is always used in the Laws of Thermodynamics? A) Open Systems. B) Closed Systems. C) Isolated Systems. D) Skeletal System (obviously). Show Answer Correct Answer: B) Closed Systems. 23. A Carnot engine operates between 200$^\circ$C and 20$^\circ$C. Its maximum possible efficiency is A) 90%. B) 100%. C) 38%. D) 24%. E) 72%. Show Answer Correct Answer: C) 38%. 24. When excess HCl reacts with 0.250 mole of NH$_{3}$, a total of 11.0 kJ of heat energy is released. What is the value of $\Delta$H in kJ per mole NH$_{3}$ consumed? A) -44.0. B) -11.0. C) +44.0. D) +11.0. Show Answer Correct Answer: A) -44.0. 25. Which law of thermodynamics introduces the concept of entropy? A) First Law. B) Second Law. C) Third Law. D) Zeroth Law. Show Answer Correct Answer: B) Second Law. ← 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