This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 25 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Consider the following statements(Assertion) The internal energy of an ideal gas does not change during an Isothermal process(Reason) The decrease in the volume of the gas is compensated by a corresponding increase in pressure when its temperature is constant in accordance with Boyle law. A) Both A & R are true and R is correct Explanation of A. B) Both A & R are true and R is not correct Explanation of A. C) A is true R is false. D) A is false but R is true. Show Answer Correct Answer: A) Both A & R are true and R is correct Explanation of A. 2. Explain the concept of thermal equilibrium. A) Thermal equilibrium is the state in which two or more bodies in thermal contact have the same temperature, resulting in no net heat flow between them. B) Thermal equilibrium is achieved only in a vacuum environment. C) Thermal equilibrium is the process of heat transfer from one body to another. D) Thermal equilibrium occurs when bodies are at different temperatures. Show Answer Correct Answer: A) Thermal equilibrium is the state in which two or more bodies in thermal contact have the same temperature, resulting in no net heat flow between them. 3. Entropy is a measure of the number of ways in which energy is distributed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. The standard fixed point of the thermometry is the A) Ice point. B) Triple point of water. C) Boiling point water. D) Sulphur point. Show Answer Correct Answer: B) Triple point of water. 5. The transfer of thermal energy between objects of different temperatures is called ..... A) Temperature. B) Heat. C) Internal energy. D) None of these. Show Answer Correct Answer: B) Heat. 6. Which of the following statements best describes the first law of thermodynamics? A) Energy can be created or destroyed, but not transformed. B) Energy can be transformed, but not created or destroyed. C) Energy can be created and destroyed, but not transformed. D) Energy cannot be created, destroyed, or transformed. Show Answer Correct Answer: B) Energy can be transformed, but not created or destroyed. 7. The first person to liquify hydrogen is A) Farady. B) Linde. C) Dewar. D) Kapitza. Show Answer Correct Answer: C) Dewar. 8. A gas in a closed container is heated with 10J of energy, causing the lid of the container to rise 2m with 3N of force. What is the total change in energy of the system? A) 8J. B) 6J. C) 4J. D) -4J. E) 10J. Show Answer Correct Answer: C) 4J. 9. Study of how heat moves is called ..... A) Thermodynamics. B) Thermometer. C) Heat energy. D) Thermal expansion. Show Answer Correct Answer: A) Thermodynamics. 10. How much energy is required to convert 3 kg of water at 20$^\circ$C to steam at 100$^\circ$C? (The specific heat of water is 4.184 J/g$^\circ$C and the latent heat of vaporization is 2257 J/g) A) 1, 100 J. B) 9, 100, 000 J. C) 7, 800, 000 J. D) 730, 000 J. Show Answer Correct Answer: C) 7, 800, 000 J. 11. According to the first law of thermodynamics, energy cannot be created or destroyed, only ..... A) Transferred and transformed. B) Increased and decreased. C) Stored and released. D) Measured and calculated. Show Answer Correct Answer: A) Transferred and transformed. 12. Macroscopic Thermodynamics is related to A) Molecular dimension. B) System as a bulk. C) Both are true. D) None of the above. Show Answer Correct Answer: B) System as a bulk. 13. One calorie is equal to A) The amount of energy required to change the temperature of one gram of water by one degree Celsius. B) 4.186 Joules. C) 0.001 kilocalories. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. The pressure relative to the atmospheric pressure is called as ..... A) Absolute Pressure. B) Atmospheric Pressure. C) Gauge Pressure. D) Vacuum Pressure. Show Answer Correct Answer: C) Gauge Pressure. 15. The state of entropy of the entire universe, as an isolated system, will always increase over time. A) First Law of Thermodynamics. B) Second Law of Thermodynamics. C) Third Law of Thermodynamics. D) Zeroth Law of Thermodynamics. Show Answer Correct Answer: B) Second Law of Thermodynamics. 16. The first law of thermodynamics is basically the same as which law? 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. 17. Calculate the change in energy (in kJ) for the reaction shown below, if you begin with 75.0 grams of oxygen (O2), and the $\Delta$Hrxn =-902.0 kJ. 4 NH3(g) + 5 O2(g) $\rightarrow$ 4 NO(g) + 6 H2O(g) A) -423 kJ. B) -413 kJ. C) -513 kJ. D) -523 kJ. Show Answer Correct Answer: A) -423 kJ. 18. Engine A and B are working between same temperature limits and A is reversible then:$\eta_A>\eta_B$ A) Corollary of Carnot's theorem. B) Clausius' Theorem. C) Carnot's theorem. D) Clausius' inequality. Show Answer Correct Answer: C) Carnot's theorem. 19. Which law of thermodynamics implies that it is impossible to reach absolute zero temperature? A) 1st law of thermodynamics. B) 2nd law of thermodynamics. C) 3rd law of thermodynamics. D) Zeroth Law. Show Answer Correct Answer: C) 3rd law of thermodynamics. 20. In the formula of The First Law of Thermodynamics, the ''W" represent: A) Work done on or by the system. B) Change in internal energy. C) Energy transferred as heat. D) None of the above. Show Answer Correct Answer: A) Work done on or by the system. 21. For open system we deals with A) Lagrangian concept. B) Eulerial concept. C) All the above. D) None of the above. Show Answer Correct Answer: B) Eulerial concept. 22. Which is an example of the 0th law? A) 0 Kelvin. B) Chaos cannot decrease. C) A=B=C. D) U = W-q. Show Answer Correct Answer: C) A=B=C. 23. In a closed system, if 50 J of heat is added and 20 J of work is done by the system, what is the change in internal energy according to the first law of thermodynamics? A) 30 J. B) 70 J. C) 50 J. D) 20 J. Show Answer Correct Answer: A) 30 J. 24. Which one of the following statements concerning an ideal engine is true? A) The entropy of the system decreases with time. B) No heat transfer occurs between the system and its surroundings. C) All system processes are reversible. D) The temperature of the system is usually constant. E) The system cannot be used to perform work. Show Answer Correct Answer: C) All system processes are reversible. 25. What is the equation for the first law of thermodynamics? A) $\Delta U=Q-W$. B) $Q=\Delta U+W$. C) $W=Q-\Delta U$. D) $W=\Delta U-Q$. Show Answer Correct Answer: D) $W=\Delta U-Q$. ← 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