This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If work done on a system then work done is A) Positive. B) Negative. C) Zero. D) Infinite. Show Answer Correct Answer: B) Negative. 2. Explain the concept of heat transfer by conduction. A) Conduction is the transfer of heat through radiation in a vacuum. B) Conduction occurs only in liquids and gases, not in solids. C) Conduction is the transfer of heat through direct contact between materials, involving particle collisions and energy transfer. D) Conduction involves the movement of heat through convection currents. Show Answer Correct Answer: C) Conduction is the transfer of heat through direct contact between materials, involving particle collisions and energy transfer. 3. States that if the mechanical energy of a system is constant, the increase in the thermal energy of the system equal the sum of the thermal energy transferred into the system and the work done on the system A) 1st Law of Thermodynamics. B) 2nd law of thermodynamics. C) Thermodynamics. D) Thermal insulator. E) Law of heat. Show Answer Correct Answer: A) 1st Law of Thermodynamics. 4. Which of these are bosons? A) Electrons. B) Protons. C) Neutrons. D) Photons. Show Answer Correct Answer: D) Photons. 5. The specific heat of copper is 0.385 J/g $^\circ$C. How much thermal energy is required to increase the temperature of a 20g sample of copper from 20$^\circ$C to 50$^\circ$C? A) 154 J. B) 231 J. C) 308 J. D) 385 J. Show Answer Correct Answer: B) 231 J. 6. What is the first law of thermodynamics? A) $\Delta E=W-Q$. B) $\Delta E=Q-W$. C) $\Delta Q=E-W$. D) $\Delta Q=W-E$. Show Answer Correct Answer: B) $\Delta E=Q-W$. 7. What is thermodynamics? A) Study of the relationship between heat and other forms of energy. B) Study of the conversion of chemical energy to other forms of energy. C) Tudy of the relationship between mechanical energy to other forms of energy. D) Study of the conversion of mechanical energy to other forms of energy. Show Answer Correct Answer: A) Study of the relationship between heat and other forms of energy. 8. A measure of the average kinetic energy of the molecules in a substance A) Thermal energy. B) Temperature. C) Heat. D) None of the above. Show Answer Correct Answer: B) Temperature. 9. How does Hess's Law enable the calculation of the change in enthalpy for a reaction? A) By measuring the temperature change during the reaction. B) By adding or subtracting the enthalpies of intermediate reactions. C) By analyzing the kinetics of the reaction. D) By measuring the volume change during the reaction. Show Answer Correct Answer: B) By adding or subtracting the enthalpies of intermediate reactions. 10. Which experiment best demonstrates the first law of thermodynamics? A) Measuring the temperature change in a gas when compressed in a piston. B) Observing the melting of ice in a warm room. C) Measuring the increase in entropy when a gas expands. D) Observing the cooling of a hot cup of coffee over time. Show Answer Correct Answer: A) Measuring the temperature change in a gas when compressed in a piston. 11. Kelvin and Planck's statement describes A) Perfect heat engine. B) An unattainable perfect engine. C) Steam engine. D) All the above. Show Answer Correct Answer: B) An unattainable perfect engine. 12. Which has more entropy, a solid liquid or a gas? A) Gas. B) Liquid. C) Solid. D) None of the above. Show Answer Correct Answer: A) Gas. 13. Why can't a heat engine be 100% efficient? A) Heat is always created. B) No work can be done. C) Entropy is lost. D) Thermal energy decreases. Show Answer Correct Answer: A) Heat is always created. 14. Which of the following processes is an example of an increase in entropy? A) Freezing of water. B) Condensation of steam. C) Melting of ice. D) Formation of a crystal. Show Answer Correct Answer: C) Melting of ice. 15. The 1st Law of Thermodynamics says that temperature exists A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 16. Energy cannot be changed without a loss of useable energy (heat) . A) First Law of Thermodynamics. B) Second Law of Thermodynamics. C) All the above. D) None of the above. Show Answer Correct Answer: B) Second Law of Thermodynamics. 17. What is the phase of water when its temperature is 150 $^\circ$C? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 18. Explain the process of phase change from liquid to gas. A) The phase change from liquid to gas is called condensation. B) Vaporization occurs when a gas cools down and turns into a liquid. C) The phase change from liquid to gas is called vaporization, which occurs when a liquid absorbs enough energy to overcome intermolecular forces. D) The process of liquid turning into gas is known as sublimation. Show Answer Correct Answer: C) The phase change from liquid to gas is called vaporization, which occurs when a liquid absorbs enough energy to overcome intermolecular forces. 19. Choose the correct alternative: A) Energy is the ability to do work. B) Energy is not related to work. C) A person writing on her notebook is the same "work" as the scientific term "work" . D) Kinetic energy is not an ability to do work. Show Answer Correct Answer: A) Energy is the ability to do work. 20. In a free expansion process A) Work done is zero. B) Heat transfer is zero. C) Both (a) and (b) above. D) Work done is zero but heat increases. Show Answer Correct Answer: C) Both (a) and (b) above. 21. How much heat is released when 5.00 g of propane (M=44.11g/mol) combusts? The heat of combustion for propane is-2220 kJ/mol. A) 11100 kJ. B) 252 kJ. C) 50.3 kJ. D) 84.0 kJ. Show Answer Correct Answer: B) 252 kJ. 22. Which process involves the transfer of heat through the direct contact of adjacent molecules? A) Convection. B) Radiation. C) Sublimation. D) Conduction. Show Answer Correct Answer: D) Conduction. 23. Which real-world application is an example of the third law of thermodynamics? A) A refrigerator cooling food by removing heat from its interior. B) A heat engine converting thermal energy into mechanical work. C) A superconducting material exhibiting zero electrical resistance at absolute zero. D) A solar panel converting sunlight into electrical energy. Show Answer Correct Answer: C) A superconducting material exhibiting zero electrical resistance at absolute zero. 24. Three moles of a diatomic gas are heated from 127$^\circ$C to 727$^\circ$C at a constant pressure of 1 atm. Find the amount of heat released. A) 37, 400 J. B) 52, 400 J. C) 22, 400 J. D) 56, 100 J. Show Answer Correct Answer: B) 52, 400 J. 25. The average speed of the atoms of a gas at 100K is 200 m/s. What would most likely be the average speed of the atoms at 200K? A) 67 m/s. B) 140 m/s. C) 200 m/s. D) 350 m/s. Show Answer Correct Answer: D) 350 m/s. ← 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