This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Work done in an isothermal reversible process is always ..... than the work done in an isothermal irreversible process. A) Higher. B) Lower. C) Less. D) Min. Show Answer Correct Answer: A) Higher. 2. The standard enthalpy of formation of NH$_{3}$ is-46 kJ mol$^{-1}$. If the enthalpy of formation of H$_{2}$ from its atoms is-436 kJ mol$^{-1}$ and that of N$_{2}$ is-712 kJ mol$^{-1}$, the average bond enthalpy of N-H bond in NH$_{3}$ is A) -1102 kJ mol$^{-1}$. B) -964 kJ mol$^{-1}$. C) + 352 kJ mol$^{-1}$. D) + 1056 kJ mol$^{-1}$. Show Answer Correct Answer: C) + 352 kJ mol$^{-1}$. 3. Sometimes a cycle with well inflated tyres left in the Sun has its tube burst open. This is because the A) Pressure of air inside the tube increases. B) Volume of air inside the tube increases. C) Both volume and pressure of air increases. D) None of the above. Show Answer Correct Answer: A) Pressure of air inside the tube increases. 4. Which of the following is an extensive property? A) Molar heat capacity. B) Temperature. C) Enthalpy. D) All of these. Show Answer Correct Answer: C) Enthalpy. 5. Which law helps us understand the concept of temperature and allows us to use thermometers? A) Zeroth Law. B) First Law. C) Second Law. D) Third Law. Show Answer Correct Answer: A) Zeroth Law. 6. In a closed system, if the internal energy increases by 50 J and the system does 20 J of work, what is the amount of heat added to the system? A) 30 J. B) 70 J. C) 50 J. D) 20 J. Show Answer Correct Answer: B) 70 J. 7. Zeroth law of thermodynamics is: A) Kinetic energy of molecules of a gas is zero. B) Ideal gas does not contain molecules. C) If two systems are thermal equilibrium third one is also in equilibrium. D) Absolute zero temperature cannot be obtained. Show Answer Correct Answer: C) If two systems are thermal equilibrium third one is also in equilibrium. 8. I combine 1 kg of water at 50 degrees Celsius with 1 kg of water at 70 degrees Celsius. What is the resulting temperature of the water? A) 50 degrees C. B) 70 degrees C. C) 60 degrees C. D) 65 degrees C. E) 55 degrees C. Show Answer Correct Answer: C) 60 degrees C. 9. How much energy is required to completely boil away 150g of 10$^{o}$ C water? Use C = 4.184 J/g$^{o}$C for water, and H$_{v}$ = 2260 J/g. A) 56, 484 J. B) 339, 000 J. C) 395, 484 J. D) 385, 484 J. Show Answer Correct Answer: C) 395, 484 J. 10. G of water. specific heat of water is 4.184 J/g$^\circ$C. temperature changes from 25.0$^\circ$ C to 20.0$^\circ$ C, how much heat energy moves from the water to the surroundings? A) 418 Joules. B) 209 J. C) 83 J. D) 4.18 J. Show Answer Correct Answer: A) 418 Joules. 11. Heat refers to A) How hot or cold an object is. B) Transference of amount of thermal energy. C) Temperature due to pressure. D) Pressure due to heat. Show Answer Correct Answer: B) Transference of amount of thermal energy. 12. When water is heated from 10$^\circ$C to 15$^\circ$C What is the change in temperature? A) 10 $^\circ$C. B) 5 $^\circ$C. C) 15 $^\circ$C. D) 25 $^\circ$C. Show Answer Correct Answer: B) 5 $^\circ$C. 13. It states that if two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other. A) 1st law of thermodynamics. B) 2nd law of thermodynamics. C) 3rd law of thermodynamics. D) Zeroth Law. Show Answer Correct Answer: D) Zeroth Law. 14. In which of the following systems, no matter, but only heat is exchanged between system and surrounding? A) Open system. B) Closed system. C) Isolated system. D) None of the above. Show Answer Correct Answer: B) Closed system. 15. "Lava lamps" contain colored liquids. These liquids form globs that rise to the top due to A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: B) Convection. 16. When a substance or material gets hotter, it expands to a greater volume, this is called ..... A) Thermodynamics. B) Temperature. C) Thermal equilibrium. D) Thermal expansion. Show Answer Correct Answer: D) Thermal expansion. 17. The absolute temperature of a sample of monatomic ideal gas is doubled at constant volume. What effect, if any, does this have on the pressure and density of the sample of gas? A) Remains the same, Remains the same. B) Remains the same, Doubles. C) Doubles, Remains the same. D) Doubles, Doubles. Show Answer Correct Answer: C) Doubles, Remains the same. 18. Which of the following processes is an example of an adiabatic process? A) Melting of ice at room temperature. B) Boiling of water at constant pressure. C) Rapid compression of a gas in an insulated cylinder. D) Slow heating of a gas in an open container. Show Answer Correct Answer: C) Rapid compression of a gas in an insulated cylinder. 19. In Isothermal process which property remains constant A) Volume. B) Pressure. C) Concentration. D) Temperature. Show Answer Correct Answer: D) Temperature. 20. Energy is ..... when higher-energy particles come into contact with lower-energy particles. A) Transferred. B) Lost. C) Missing. D) Qualitative. Show Answer Correct Answer: A) Transferred. 21. In a commercial chemical cold pack, an inner pouch containing water is broken and the water is allowed to mix with a sample of solid ammonium nitrate. The signs of the values for $\Delta H$ $\Delta S$ A) Positive, positive. B) Positive, negative. C) Negative, positive. D) Negative, negative. Show Answer Correct Answer: A) Positive, positive. 22. The mechanical equivalent of heat is equal to 1 when the units are in A) SI. B) FPS. C) All the above. D) None of the above. Show Answer Correct Answer: A) SI. 23. The metal skewer gets so hot that you drop your marshmallow into the campfire because of A) Conduction. B) Convection. C) Radiation. D) None of the above. Show Answer Correct Answer: A) Conduction. 24. A student calculates the heat of combustion of a biscuit from an experiment to be 28.5kJ /g. The packet suggest that the heat of combustion is 30.2kJ/g. What is the experimental percent error of this data? A) 0.94%. B) 5.63 %. C) 94.0%. D) 3.12%. Show Answer Correct Answer: B) 5.63 %. 25. When an ideal gas undergoes an adiabatic expansion, which of the following statements is true? A) Thetemperature of the gas doesn't change. B) No work is done by the gas. C) No energy is delivered to the gas by heat. D) The internal energy of the gas doesn't change. E) The pressure increases. Show Answer Correct Answer: C) No energy is delivered to the gas by heat. ← 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 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