This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In order for energy to be less concentrated what must be done? A) Heat released. B) Reduce thermal energy. C) Work. D) Increase Radiation. Show Answer Correct Answer: C) Work. 2. The Father of Thermodynamics is ..... A) Sadi Carnot. B) Isaac Newton. C) Albert Einstin. D) Thomas Edison. Show Answer Correct Answer: A) Sadi Carnot. 3. Celsius Scale A) Water freezes at 0 degrees and boils at 100 degrees. B) Water boils at 212 degrees and freezes at 32 degrees. C) Water boils at 273 degrees and boils at 373 degrees. D) None of the above. Show Answer Correct Answer: A) Water freezes at 0 degrees and boils at 100 degrees. 4. If the kinetic energy of the system is decreasing, which of the following phase change may occur? A) Melting. B) Condensation. C) Boiling. D) Sublimation. Show Answer Correct Answer: B) Condensation. 5. Entropy always increases when A) Enthalpy decreases. B) Temperature decreases. C) Temperature increases. D) Volume increases. Show Answer Correct Answer: C) Temperature increases. 6. Two identical blocks of iron, one at 10 degrees C and the other at 20 degrees C, are put in contact. Suppose the cooler block cools to 5 degrees C and the warmer block warms to 25 degrees C. This would violate the A) First law of thermodynamics. B) Second law of thermodynamics. C) Both of the above. D) None of the above. Show Answer Correct Answer: B) Second law of thermodynamics. 7. In an isolated system, what does the second law of thermodynamics predict about entropy? A) Entropy will decrease. B) Entropy will remain constant. C) Entropy will increase. D) Entropy will fluctuate randomly. Show Answer Correct Answer: C) Entropy will increase. 8. In which of the following systems does mass transfer occur across the system boundary? A) Isolated system. B) Closed system. C) Open system. D) None of the mentioned. Show Answer Correct Answer: C) Open system. 9. The enthalpy of formation of O$_{2}$ in its standard state is ..... A) +0.1 kJ mol$^{-1}$. B) 0. C) -0.1 kJ mol$^{-1}$. D) +16 KJ mol$^{-1}$. Show Answer Correct Answer: B) 0. 10. Third law of thermodynamics provides a method to evaluate which property? A) Absolute Energy. B) Absolute Enthalpy. C) Absolute Entropy. D) Absolute Free Energy. Show Answer Correct Answer: C) Absolute Entropy. 11. The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy? A) 40 kJ. B) > 40 kJ. C) < 40 kJ. D) Zero. Show Answer Correct Answer: D) Zero. 12. The second law of thermodynamics states that entropy of a system tends to ..... A) Increase. B) Decrease. C) Stay constant. D) Fluctuate wildly. Show Answer Correct Answer: A) Increase. 13. The amount of heat required to change 1 kg of liquid into gas at constant temperature is called A) Heat of fusion. B) Heat of vaporization. C) Heat of change of state. D) Heat of solid. Show Answer Correct Answer: B) Heat of vaporization. 14. The Enthalpy of vaporisation of a substance is 8400J/mol and it's boiling pt. is-173$^\circ$C.The entropy change for vaporisation is: A) 84J/mol/K. B) 21J/mol/K. C) 49J/K/mol. D) 12 J/K/mol. Show Answer Correct Answer: A) 84J/mol/K. 15. A sample of metal has a mass of 5.2 g and absorbs 478 joules of energy as it is heated from 30.0$^\circ$C to 37.35$^\circ$C. What is the heat capacity of the metal? A) 0.42 J/g $^\circ$C. B) -0.080 J/g $^\circ$C. C) 13 J/g $^\circ$C. D) -13 J/g $^\circ$C. Show Answer Correct Answer: C) 13 J/g $^\circ$C. 16. The change of reactants into products will always be spontaneous if the products, compared to the reactants, have A) Lower enthalpy and lower entropy. B) Lower enthalpy and higher entropy. C) Higher enthalpy and lower entropy. D) Higher enthalpy and higher entropy. Show Answer Correct Answer: B) Lower enthalpy and higher entropy. 17. A process that takes place at constant temperature is called A) Adiabatic. B) Isobaric. C) Isothermal. D) Isotactic. Show Answer Correct Answer: C) Isothermal. 18. If Veronica increases the temperature of her gas tank, why does the pressure rise? A) The container expands as it gets hot. B) As the KE of the particles increases, they move with a greater speed. C) As it gets hot the PEg increases. D) The higher the temperature, the greater the specific heat. Show Answer Correct Answer: B) As the KE of the particles increases, they move with a greater speed. 19. A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66, 300 J. If the specific heat of copper is 0.3845 J/g $^{0}$C, what is the change of the copper's temperature? A) 641 $^\circ$C. B) 51, 700, 000 $^\circ$C. C) 574 $^\circ$C. D) 85.0 $^\circ$C. Show Answer Correct Answer: C) 574 $^\circ$C. 20. System gains 700 kJ of heat, change in internal energy of the system equal to 200 kJ. How much work is done? A) +500. B) -500. C) 900. D) -900. Show Answer Correct Answer: B) -500. 21. Heat is transferred as a result of a: A) Pressure difference. B) Body force. C) Entropy difference. D) Temperature difference. Show Answer Correct Answer: D) Temperature difference. 22. A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25$^\circ$C to 175$^\circ$C. Calculate the specific heat capacity of iron. A) 0.46 J/g$^{o}$C. B) 1.654 J/g$^{o}$C. C) 2, 600, 000 J/g$^{o}$C. D) 2.2 J/g$^{o}$C. Show Answer Correct Answer: A) 0.46 J/g$^{o}$C. 23. In a reversible process the system absorbs 600 kJ heat and performs 250 kJ work on the surroundings. What is the increase in the internal energy of the system? A) 850 kJ. B) 600 kJ. C) 350 kJ. D) 250 kJ. Show Answer Correct Answer: C) 350 kJ. 24. The first Law of Thermodynamics is concerned with the conservation of: A) No.of molecules. B) Energy. C) No.of moles. D) Temperature. Show Answer Correct Answer: B) Energy. 25. At what temperature would a given reaction become spontaneous if $\Delta$H =+119kJ and $\Delta$S=+263J/K.mol A) 452 K. B) 2210 K. C) 382 K. D) 363 K. Show Answer Correct Answer: A) 452 K. ← 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 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 10Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books