This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 44 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 44 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is latent heat? A) Sum of all microscopics forms of energy of a system. B) Phase change process that cannot occur without a change in the chemical composition of a system. C) Phase change process that can occur due to elevation in a gravitational field and motion. D) Phase change process that can occur without a change in the chemical composition of a system. Show Answer Correct Answer: D) Phase change process that can occur without a change in the chemical composition of a system. 2. The rate of change of free energy with respect to temperature at constant pressure is A) Entropy. B) Negative entropy. C) Enthalpy. D) Negative enthalpy. Show Answer Correct Answer: D) Negative enthalpy. 3. The internal energy change in a system that has absorbed 2Kcal of heat and done 500J of work is A) 7900J. B) 8900J. C) 6400J. D) 5400J. Show Answer Correct Answer: A) 7900J. 4. How does the concept of friction determine the direction of time? A) Friction decreases the entropy of a system. B) Friction creates energy. C) Friction causes motion of a system to slow. D) None of the above. Show Answer Correct Answer: C) Friction causes motion of a system to slow. 5. Define Exothermic A) Energy is released; $\Delta$H is negative; Going from Gas to Liquid, Liquid to Solid. B) Energy is absorbed; $\Delta$H is positive; Going from Gas to Liquid, Liquid to Solid. C) Energy is released; $\Delta$H is positive; Going from Solid to Liquid, Liquid to Gas. D) Energy is absorbed; $\Delta$H is negative; Going from Gas to Liquid, Liquid to Solid. Show Answer Correct Answer: A) Energy is released; $\Delta$H is negative; Going from Gas to Liquid, Liquid to Solid. 6. Boiling point of water in Celsius: A) 0. B) 32. C) 100. D) 212. Show Answer Correct Answer: C) 100. 7. In our equations, what does "$\Delta$T" represent? A) Mass. B) Change in temperature. C) Latent heat. D) Specific heat. Show Answer Correct Answer: B) Change in temperature. 8. Thermal energy transfer through the movement of hot and cold air in a circular motion is A) Radiation. B) Conduction. C) Convection. D) Science. Show Answer Correct Answer: C) Convection. 9. Which of the following is always a characteristic of an adiabatic process? A) No heat flows into or out of the system (Q = 0). B) The temperature does not change ($\Delta$T = 0). C) No work is done on or by the system (W = 0). D) The internal energy does not change ($\Delta$U = 0). E) The pressure does not change ($\Delta$P = 0). Show Answer Correct Answer: A) No heat flows into or out of the system (Q = 0). 10. Entropy remains constant in A) Adiabatic process. B) Isothermal process. C) Isochoric process. D) Isolated process. Show Answer Correct Answer: A) Adiabatic process. 11. For endothermic reaction $\Delta$ A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive. 12. An energy interaction is ..... , if its driving force is a temperature difference A) Heat transfer. B) Work transfer. C) Restricted. D) None of the above. Show Answer Correct Answer: A) Heat transfer. 13. The entropy of an isolated system can never ..... A) Decrease. B) Be zero. C) Increase. D) None of the mentioned. Show Answer Correct Answer: A) Decrease. 14. The rate of change of free energy change with respect to temperature at constant pressure is A) Negative entropy. B) Volume. C) Temperature. D) Temperature coefficient. Show Answer Correct Answer: D) Temperature coefficient. 15. Which of the following best describes the concept of enthalpy in thermodynamics? A) The total energy of a system, including both internal energy and the energy required to make room for it by displacing its environment. B) The measure of disorder or randomness in a system. C) The energy transferred between systems due to temperature difference. D) The energy required to change the temperature of a unit mass by 1$^\circ$C. Show Answer Correct Answer: A) The total energy of a system, including both internal energy and the energy required to make room for it by displacing its environment. 16. In Carnot cycle ..... processes are there A) 3. B) 4. C) 5. D) None of the above. Show Answer Correct Answer: B) 4. 17. A 0.10 kg ball falls 10.m onto a hard floor and then bounces back up to 9.0m. How much of its transformed to the internal energy of the ball and the floor? A) 0.78 J. B) 0.98 J. C) 0.89 J. D) 0J. Show Answer Correct Answer: B) 0.98 J. 18. No work is done on or by the system A) Isothermal. B) Adiabatic. C) Isovolumetric. D) Isolated System. Show Answer Correct Answer: C) Isovolumetric. 19. Which law of thermodynamics states that energy cannot be created or destroyed? A) First Law. B) Second Law. C) Third Law. D) Zeroth Law. Show Answer Correct Answer: A) First Law. 20. Identify whether the following result in an increase or decrease in entropy:3 moles of gas (on reactant side) $\rightarrow$ 6 moles of gas (product) A) Increase. B) Decrease. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increase. 21. Which one of these would result in a decrease in entropy? A) A solid solute dissolves in water. B) A gas is released. C) A liquid freezes. D) A liquid boils. Show Answer Correct Answer: C) A liquid freezes. 22. The second law of thermodynamics states that A) The entropy of a perfect crystal is zero at O K. B) The entropy of the universe is constant. C) The entropy of the universe is increasing. D) The energy of the universe is constant. Show Answer Correct Answer: C) The entropy of the universe is increasing. 23. Where does the energy released in a chemical reaction come from? A) It is created. B) It comes from the kinetic energy of the moving particles. C) It comes from the potential energy stored in chemical bonds. D) None of the above. Show Answer Correct Answer: C) It comes from the potential energy stored in chemical bonds. 24. The symbol for specific latent heat is A) C. B) $l$. C) Q. D) M. Show Answer Correct Answer: B) $l$. 25. What is the work output of a machine that has a work input of 2, 800 Joules and an efficiency of 92.3%? A) 2, 690J. B) 92.3J. C) 0.0082J. D) 2, 584.4. Show Answer Correct Answer: D) 2, 584.4. ← 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