This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 6 Thermodynamics – Quiz 23 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 6 Thermodynamics Quiz 23 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If heat flows into the system from the surrounding, then heat is taken as ..... A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: A) Positive. 2. During an exothermic reaction, heat content in the surroundings increases because A) Heat energy is destroyed during reactions. B) The reaction absorbs heat energy. C) The energy contained in the reactants is lower then the products. D) The energy contained in the products is lower than the reactants. Show Answer Correct Answer: D) The energy contained in the products is lower than the reactants. 3. In optical pyrometer, the temperature of the body can be calculated by using the formula A) Raleigh-Janes Formula. B) Kirchoff's Law. C) Stefan's Law. D) Plank's Law. Show Answer Correct Answer: D) Plank's Law. 4. The heating and expanding of a gas is called A) Thermodynamic system. B) Thermodynamic cycle. C) Thermodynamic process. D) Thermodynamic law. Show Answer Correct Answer: B) Thermodynamic cycle. 5. What are the four laws of thermodynamics? A) 1) Zeroth Law, 2) First Law, 3) Second Law, 4) Third Law. B) Zeroth Law, First Law, Second Law, Fifth Law. C) First Law, Second Law, Third Law, Fourth Law. D) First Law, Second Law, Third Law, Fourth Law. Show Answer Correct Answer: A) 1) Zeroth Law, 2) First Law, 3) Second Law, 4) Third Law. 6. C+ O$_{2}$ $\rightarrow$ CO$_{2}$ + 60kJ, what is the value for $\Delta$H for the reaction? A) +60. B) -60. C) There is no way to know. D) None of the above. Show Answer Correct Answer: B) -60. 7. The universal gas constant is: A) C$_{p}$/C$_{v}$. B) C$_{p}$-C$_{v}$. C) C$_{p}$+C$_{v}$. D) C$_{v}$/C$_{p}$. Show Answer Correct Answer: B) C$_{p}$-C$_{v}$. 8. Which of the following is equivalent to the principle of energy conservation? A) Newton's first law. B) The first law of thermodynamics. C) Newton's second law. D) The second law of thermodynamics. Show Answer Correct Answer: B) The first law of thermodynamics. 9. Which of the following property cannot be used to describe state of a system? A) Pressure. B) Volume. C) Temperature. D) Universal Gas Constant. Show Answer Correct Answer: D) Universal Gas Constant. 10. The rate og change of free energy with pressure at constant temperature is equal to A) Volume. B) Temperature. C) Pressure. D) Entropy. Show Answer Correct Answer: A) Volume. 11. If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest? A) 100 mL. B) 1000 mL. C) They both heat up at the same speed. D) They cool down. Show Answer Correct Answer: A) 100 mL. 12. Energy can be less than zero A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 13. Given the change of phase:CO$_{2}$(g) $\rightarrow$ CO$_{2}$(s). As CO$_{2}$(g) changes to CO$_{2}$(s), the entropy of the system A) Decreases. B) Increases. C) Remains the same. D) None of the above. Show Answer Correct Answer: A) Decreases. 14. Which of the following would most likely lead to a spontaneous reaction. A) A high negative enthalpy. B) A low negative enthalpy. C) A high positive enthalpy. D) A low positive enthalpy. Show Answer Correct Answer: A) A high negative enthalpy. 15. In a closed system, 500 J of heat is added, and the system does 200 J of work. According to the first law of thermodynamics, what is the change in internal energy of the system? A) 300 J. B) 700 J. C) 500 J. D) 200 J. Show Answer Correct Answer: A) 300 J. 16. What determines whether a process is reversible? A) Heat. B) Microstates. C) Entropy. D) The system. Show Answer Correct Answer: C) Entropy. 17. Identify the incorrect statement among the following.-A:In an isothermal process, the temperature of the system remains constant.-B:During such a process, the internal energy of an ideal gas does not change.-C:An isothermal expansion of a gas requires a change in external temperature to maintain constant temperature within the system. A) A. B) B. C) C. D) None of the above. Show Answer Correct Answer: C) C. 18. Which of the following statements is true about an isentropic process? A) An isentropic process is an irreversible isothermal process. B) An isentropic process is a reversible adiabatic process. C) An isentropic process is a reversible isothermal process. D) An isentropic process is an irreversible adiabatic process. Show Answer Correct Answer: B) An isentropic process is a reversible adiabatic process. 19. Temperature A) The hotness or coldness of matter as related to the average kinetic energy of the molecules of that substance. B) The emission or transmission of energy as particles or waves. C) The law stating that, when left to itself, a system's entropy always increases, never decreases; also known as the law of entropy. D) The internal energy of a system, including the kinetic and potential energy of its particles. Show Answer Correct Answer: A) The hotness or coldness of matter as related to the average kinetic energy of the molecules of that substance. 20. Adding energy into a system A) Exergonic. B) Endergonic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Endergonic. 21. Equal amount of same gas in two similar cylinders A and B, compressed to same final volume from same initial volume one adiabatically and another isothermally, respectively, then A) The final pressure in A is more than in B. B) The final pressure in B is greater than in A. C) The final pressure in both is equal. D) For the gas, value of $\gamma=\frac{C_p}{C_v}$. Show Answer Correct Answer: A) The final pressure in A is more than in B. 22. What information do we need to perform a calculation of Gibbs Free Energy? A) Enthalpy of the reaction. B) Entropy of the reaction. C) The temperature of the reaction in Kelvin. D) All of the above are needed. Show Answer Correct Answer: D) All of the above are needed. 23. The transfer of energy from one system to another A) Temperature. B) Internal energy. C) Heat. D) None of the above. Show Answer Correct Answer: C) Heat. 24. What happens to the internal energy of a system when work is done on it and heat is added? A) It decreases. B) It remains the same. C) It increases. D) It depends on the mass of the system. Show Answer Correct Answer: C) It increases. 25. In which system will there be a decrease in entropy as bromine undergoes a change in phase? A) Br$_{2}$(s) $\rightarrow$ Br$_{2}$(l). B) Br$_{2}$(g) $\rightarrow$ Br$_{2}$(l). C) Br$_{2}$(l) $\rightarrow$ Br$_{2}$(g). D) Br$_{2}$(s) $\rightarrow$ Br$_{2}$(g). Show Answer Correct Answer: B) Br$_{2}$(g) $\rightarrow$ Br$_{2}$(l). ← 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