This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 33 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Pressure equal to 2.5 x10$^{5}$ Pa is applied to a gas, causing its volume to change by-2.0x10$^{-3}$ m$^{3}$. How much work is done? A) 0 J. B) -5.0x10$^{7}$ J. C) -450 J. D) -500. Show Answer Correct Answer: D) -500. 2. What is the primary reason that no machine can be 100% efficient according to the second law of thermodynamics? A) Energy is always lost as heat due to friction and other processes. B) Machines are not built perfectly. C) Energy is always conserved. D) Machines require energy to start. Show Answer Correct Answer: A) Energy is always lost as heat due to friction and other processes. 3. What is proportional to internal energy? A) Temperature. B) Heat. C) Entropy. D) External Energy. Show Answer Correct Answer: A) Temperature. 4. J-T effect is an ..... process A) Isothermal. B) Isoentropic. C) Isochoric. D) Isoenthalpic. Show Answer Correct Answer: D) Isoenthalpic. 5. A steam engine takes in 2.254 x 10$^{4}$ kJ from the boiler and gives up 1.915 x 10$^{4}$ kJ in exhaust during one cycle, what is the engine's efficiency? A) 0.85. B) 0.15. C) 0.34. D) 1.06. Show Answer Correct Answer: B) 0.15. 6. Which of the following process is exothermic? A) CH4 (g) + 2O2(g) $\rightarrow$ 2H2O(g) + CO2 (g). B) H2O (l) $\rightarrow$ H2O (g). C) CO2 (s) $\rightarrow$ CO2 (g). D) CaCO3 (s) $\rightarrow$ CaO (s) + CO2(g). Show Answer Correct Answer: A) CH4 (g) + 2O2(g) $\rightarrow$ 2H2O(g) + CO2 (g). 7. Which of the following is true about an isobaric process? A) Volume is constant. B) Pressure is constant. C) Temperature is constant. D) No transfer of heat. Show Answer Correct Answer: B) Pressure is constant. 8. The enthalpy of vaporisation of a substance is 8400 J mol-1 and its boiling point is-173$^\circ$C. The entropy change for vaporisation is: A) 12 J mol-1K-1. B) 49 J mol-1K-1. C) 21 J mol-1K-1. D) 84 J mol-1K-1. Show Answer Correct Answer: D) 84 J mol-1K-1. 9. What is the value of Solar Constant A) 1340 wm$^{-2}$. B) 1.92 cal cm$^{-2}$ min$^{-1}$. C) Both a&b. D) None. Show Answer Correct Answer: C) Both a&b. 10. Quasi-Equilibrium is ..... A) When process proceeds in such a manner that the system remains close to equilibrium state all the time. B) When process proceeds in such a hurry that the system far from equilibrium state. C) When process proceeds in such a manner that the system will far from equilibrium state. D) When process proceeds in such a hurry that the system remains close to equilibrium state all the time. Show Answer Correct Answer: A) When process proceeds in such a manner that the system remains close to equilibrium state all the time. 11. Which law explains the relationship between temperature and entropy? A) Zeroth Law. B) 1st Law. C) 2nd Law. D) 3rd Law. Show Answer Correct Answer: D) 3rd Law. 12. Disorder is more likely than order. Everything trends towards randomness and chaos. Which law does this refer to? A) 0th law of thermodynamics. B) 1st law of thermodynamics. C) 2nd law of thermodynamics. D) 3rd law of thermodynamics. Show Answer Correct Answer: C) 2nd law of thermodynamics. 13. Which of the following statements best describes the second law of thermodynamics? A) Energy cannot be created or destroyed, only transformed. B) In any energy transfer, some energy is lost as heat, increasing entropy. C) The total energy of an isolated system remains constant. D) Heat flows from a colder body to a hotter body spontaneously. Show Answer Correct Answer: B) In any energy transfer, some energy is lost as heat, increasing entropy. 14. Which law of thermodynamics can be referred to as "the arrow of time" ? A) 1st law. B) 2nd law. C) 3rd law. D) Zeroth law. Show Answer Correct Answer: B) 2nd law. 15. Energy associated by virtue of the translational rotational and vibrational motion of the molecules present in it. A) Enthalpy. B) Entropy. C) Internal energy. D) Heat. Show Answer Correct Answer: C) Internal energy. 16. Weather systems in the Earth's atmosphere are due to A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 17. Work done in a free expansion process is A) + ve. B) -ve. C) Zero. D) Maximum. Show Answer Correct Answer: C) Zero. 18. Work output of a large machine in a factory is 89, 000 Joules, and its input is 102, 000 joules. Work output of a similar machine is 92, 000 joules, and its work input is 104, 000 joules. Which machine has greater efficiency? A) The first machine. B) The second machine. C) Both have the same efficiency. D) Not enough information provided. Show Answer Correct Answer: B) The second machine. 19. If the same amount of thermal energy is transferred to three wooden blocks of different masses (100g, 200g, 300g, 400g) which one would increase in average kinetic energy the fastest? A) 100g. B) 200g. C) 300g. D) 400g. Show Answer Correct Answer: A) 100g. 20. Which law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another? A) First Law of Thermodynamics. B) Second Law of Thermodynamics. C) Third Law of Thermodynamics. D) Zeroth Law of Thermodynamics. Show Answer Correct Answer: A) First Law of Thermodynamics. 21. Freezing point of water in Fahrenheit: A) 0. B) 32. C) 100. D) 212. Show Answer Correct Answer: B) 32. 22. For an adiabatic process, which of the following statements is correct? A) Work, heat, and internal energy all undergo changes. B) Work and heat balance each other, so that there is no change in internal energy. C) No energy is transferred as heat; internal energy change is due to work. D) No work is done; internal energy change is due to heat. Show Answer Correct Answer: C) No energy is transferred as heat; internal energy change is due to work. 23. In what three ways does thermal energy transfer? A) Radiation, fire, earth. B) Conduction, snow, radiation. C) Convection, conduction, radiation. D) Science, energy, motion. Show Answer Correct Answer: C) Convection, conduction, radiation. 24. What is the heat capacity ratio for helium? A) 5/3. B) 5/2. C) 3/2. D) 7/5. Show Answer Correct Answer: A) 5/3. 25. The force applied per unit area A) Weight. B) Acceleration. C) Pressure. D) Specific Volume. Show Answer Correct Answer: C) Pressure. ← 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