Multiple Choice: Write the correct answer on your answer sheet. 1. An ideal gas as compared to a real gas at very high pressure occupies A. less volume C. more volume B. same volume D. lesser number of molecules 2. Universal gas constant is defined as equal to product of the molecular weight of the gas and A. gas constant C. specific heat at constant volume B. ratio of two specific heat D. specific heat at constant pressure 3. To solve gas law calculations, temperature must be measured in A. Kelvin C. degrees Celsius B. Newton D. degrees Fahrenheit 4. The terms below are involved in ideal gas law, EXCEPT A. Pressure B. Temperature C. Time D. Volume 5. According to Avogadro's law, for a given pressure and temperature, each molecule of a gas occupies A. same volume B. volume proportional to its specific weight C. volume proportional to its molecular weight D. volume inversely proportional to its molecular weight 6. "The absolute pressure (P) of an ideal gas is directly proportional to the Kelvin temperature (T) and the number of moles (n) of the gas and is inversely proportional to the volume of gas.", this statement is known as A. Avogadro's Law C. 1" Law of Thermodynamics B. Ideal Gas Law D. 2nd Law of Thermodynamics 7. Boltzmann's constant is equal to the value of A. (273+ 0C) C. 1.38 x 10-J/K B. 1.013 x105 Pa D. 6.022 141 99 x 1023 mol-1 8. If the volume decreases, AV is negative, and the work W is A. positive B. negative C. limited D. controlled 9. Entropy change depends on A. mass transfer C. change of temperature B. heat transfer D. change of pressure and volume 10. According to first law of thermodynamics A. entropy of a system remains constant B. total energy of a system remains constant C. work done by a system is equal to heat transferred by the system D. internal energy, enthalpy and entropy during a process remain constant 11. An engine operates between temperatures of 900 K and another engine between To and 400 K for both to do equal work, value of To will be A. 600 K B. 625 K C. 650 K D. 700K 12. In an isothermal process, the internal energy of gas molecules A. increases C. remains constant B. decreases D. shows unpredictable behavior 13. A system's internal energy is 27 J, then heat is added to the system. If the final internal energy is 34 J and the system does 26 J of work, the amount of heat added to the system is approximately equals to A. 22J B. 28J C. 30J D. 33J 14. Addition of heat at constant pressure to a gas result in raising its A. volume C. temperature B. pressure D. temperature and doing external work 15. Energy can neither be created nor destroyed but it can be converted from one form to another is inferred from the A. ideal gas law C. first law of thermodynamics B. zeroth law of therma i law to thermodynamics