This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Energy of motion is which type of energy? A) Potential. B) Kinetic. C) Sound. D) Gravitational. Show Answer Correct Answer: B) Kinetic. 2. For thermodynamic equilibrium to exist which should exist A) Thermal equilibrium. B) Chemical equilibrium. C) Mechanical equilibrium. D) All should exist. Show Answer Correct Answer: D) All should exist. 3. What does the second law of thermodynamics primarily concern? A) Conservation of energy. B) Directionality of heat transfer. C) Relationship between pressure and volume. D) Behavior of ideal gases. Show Answer Correct Answer: B) Directionality of heat transfer. 4. Consider the reaction:2 H$_{2}$O + energy $\rightarrow$ 2H$_{2}$ + O$_{2}$ A) Exothermic, releasing energy. B) Exothermic, absorbing energy. C) Endothermic, absorbing energy. D) Endothermic, releasing energy. Show Answer Correct Answer: C) Endothermic, absorbing energy. 5. Which of the following is a state function? A) Enthalpy. B) Work. C) Heat. D) Pressure. Show Answer Correct Answer: A) Enthalpy. 6. Two systems are said to be in the state of thermal equilibrium if they have A) Same size. B) Same shape. C) Same temperature. D) Same area. Show Answer Correct Answer: C) Same temperature. 7. In which process, the indicator diagram is a straight line? A) Isobaric. B) Isothermal. C) Adiabatic. D) Irreversible. Show Answer Correct Answer: A) Isobaric. 8. Which law (the most important one) states that heat naturally flows from a higher concentration to a lower concentration. A) 1st. B) 2nd. C) 3rd. D) Zeroeth. Show Answer Correct Answer: B) 2nd. 9. Which is an example of a closed system? A) Ocean. B) Heat exchangers. C) Calorimeter. D) None of the above. Show Answer Correct Answer: C) Calorimeter. 10. If the temperature of the source is increased, the efficiency of carnot heat engine A) Increases. B) Decreases. C) Remains constant. D) First increases then becomes constant. Show Answer Correct Answer: A) Increases. 11. In thermodynamic system, this refers to the external environment A) System. B) Boundary. C) Surroundings. D) Matter. Show Answer Correct Answer: C) Surroundings. 12. For a process to be 100% efficient, which of the following would need to happen regarding entropy? A) Entropy must increase. B) Entropy must remain constant. C) Entropy must decrease. D) Entropy must be zero. Show Answer Correct Answer: B) Entropy must remain constant. 13. Which of the following is the basis of temperature measurement? A) Zeroth law of thermodynamics. B) First law of thermodynamics. C) Second law of thermodynamics. D) Third law of thermodynamics. Show Answer Correct Answer: A) Zeroth law of thermodynamics. 14. PMM3 is related to A) Flow. B) Work. C) Friction. D) Heat. Show Answer Correct Answer: C) Friction. 15. In which of the following processes, a maximum increase in entropy is observed? A) Condensation of Water. B) Dissolution of Salt in Water. C) Melting of Ice. D) Sublimation of Naphthalene. Show Answer Correct Answer: D) Sublimation of Naphthalene. 16. Which of the following processes is an example of an isothermal process in thermodynamics? A) Melting of ice at 0$^\circ$C. B) Heating water from 25$^\circ$C to 100$^\circ$C. C) Compressing a gas in an insulated cylinder. D) Cooling a hot metal rod in air. Show Answer Correct Answer: A) Melting of ice at 0$^\circ$C. 17. What heating system is most common in newer homes? A) Forced air. B) A Radiator. C) Electrical. D) Convection. Show Answer Correct Answer: A) Forced air. 18. Which represents a decrease in entropy? A) Sublimation of CO$_{2}$. B) Boiling water. C) Condensation of steam on cold glass. D) NaCl dissolving in water. Show Answer Correct Answer: C) Condensation of steam on cold glass. 19. What is not true for a cyclic process? A) $\Delta$U = 0. B) W = 0. C) Q = W. D) The system returns to its initial state. Show Answer Correct Answer: B) W = 0. 20. Which equation represents Hess's Law? A) $\Delta$H = q + W. B) $\Delta$H = $\sigma$$\Delta$Hf(products)-$\sigma$$\Delta$Hf(reactants). C) $\Delta$H = mc$\Delta$T. D) $\Delta$H = $\Delta$S-$\Delta$G. Show Answer Correct Answer: B) $\Delta$H = $\sigma$$\Delta$Hf(products)-$\sigma$$\Delta$Hf(reactants). 21. Enthalpy of sublimation is = A) Enthalpy of fusion+Enthalpy of vaporisation. B) Enthalpy of fusion. C) Enthalpy of Vaporisation. D) Twice the enthalpy of vaporisation. Show Answer Correct Answer: A) Enthalpy of fusion+Enthalpy of vaporisation. 22. Amount of heat needed to raise the temperature of 1kg of a material. A) Temperature. B) Thermal energy. C) Heat. D) Specific heat. E) Solar collector. Show Answer Correct Answer: D) Specific heat. 23. Which of the following is not a scale used to measure temperature? A) Fahrenheit. B) Celsius. C) Kelvin. D) Thermodynamic. Show Answer Correct Answer: D) Thermodynamic. 24. What is internal energy? A) The amount of heat an object contains. B) The sum of the kinetic and potential energy of the particles of a substance. C) Something we can measure easily. D) Something that does not exist. Show Answer Correct Answer: B) The sum of the kinetic and potential energy of the particles of a substance. 25. According to the third law of thermodynamics, what happens to the entropy of a perfect crystal as the temperature approaches absolute zero? A) Entropy becomes infinite. B) Entropy becomes zero. C) Entropy remains constant. D) Entropy becomes negative. Show Answer Correct Answer: B) Entropy becomes zero. ← 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