Slide 1 / 66 1 What is the name of the following statement: "When two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other"? A First Law of Thermodynamics Second Law of Thermodynamics B Mechanical Equivalent of Heat C Zeroth Law of Thermodynamics D Thermal Expansion of Solids E Slide 2 / 66 2 An aluminum plate has a circular hole. If the temperature of the plate increases, what happens to the size of the hole? A Increases B Decreases C Stays the same Increases at the top half of the hole D More information is required E Slide 3 / 66 3 A bimetal plate consists of two materials of different coefficients of thermal expansion. The coefficient of thermal expansion of the top part of the plate is less than the bottom part. If the temperature of the entire plate increases, what happens to the plate? A Expands Contracts B Stays the same C Bends down D E Bends up
Slide 4 / 66 4 Which of the following temperature scales doesn't have negative numbers? A Celsius B Kelvin C Reaumur D Fahrenheit Galileo E Slide 5 / 66 5 Which of the two temperature changes are equivalent? A 1 K = 1 F 1 F = 1 C B 1 Re = 1 F C 1 K = 1 C D 1 Re = 1 K E Slide 6 / 66 6 The state of an ideal gas was changed three times at three different temperatures. The diagram represents three different isothermal curves. Which of the following is true about the temperature of the gas? T 1 > T 2 > T 3 A T 1 > T 2 < T 3 B C T 1 < T 2 < T 3 D T 1 > T 2 = T 3 T 1 = T 2 > T 3 E
Slide 7 / 66 7 A container is filled with a sample of an ideal gas at a pressure of 1.5 atm. The gas is compressed isothermally to one-fourth of its original volume. What is the new pressure of the gas? A 2 atm 3 atm B 4 atm C 5 atm D 6 atm E Slide 8 / 66 8 The state of an ideal gas was changed three times in a way that the pressure stays the same. The graph represents three isobaric lines. Which of the following is true about the pressure of the gas? P 1 > P 2 < P 3 A P 1 > P 2 > P 3 B P 1 < P 2 < P 3 C D P 1 = P 2 > P 3 P 1 > P 2 = P 3 E Slide 9 / 66 9 The temperature of an ideal gas increases from 20 O C to 40 O C while the pressure stays the same. What happens to the volume of the gas? A It doubles It quadruples B It is cut to one-half C It is cut to one-fourth D E It slightly increases
Slide 10 / 66 10 The state of an ideal gas was changed three times in a way that the volume stays the same. The graph represents three isobaric lines. Which of the following is true about the volume of the gas? A V 1 > V 2 > V 3 V 1 > V 2 < V 3 B V 1 < V 2 < V 3 C V 1 = V 2 > V 3 D V 1 > V 2 = V 3 E Slide 11 / 66 11 A container with rigid walls filled with a sample of ideal gas. The absolute temperature of the gas is doubled. What happens to the pressure of the gas? A Doubles Quadruples B Triples C D Decreased to one-half Decreased to one-fourth E Slide 12 / 66 12 The absolute temperature of an ideal diatomic gas is quadrupled. What happens to the average speed of the molecules? A Quadruples Doubles B Triples C Increases by a factor of 1.41 D E Stays the same
Slide 13 / 66 13 Two containers are filled with diatomic hydrogen gas and diatomic oxygen gas. The gases have the same temperature. Compare the average speed of the hydrogen molecules to the average speed of the oxygen molecules. A 1/16 B 1/4 16/1 C 1/2 D 4/1 E Slide 14 / 66 14 The average molecular kinetic energy of a gas depends on: A Pressure Volume B Temperature C Number of holes D None of the above E Slide 15 / 66 15 Kinetic Theory is based on an ideal gas model. The following statements about the ideal gas are true EXCEPT: A The average molecular kinetic energy is directly proportional to the absolute temperature B All molecules move with the same speed All molecules make elastic collisions with each other and the C walls of the container D The attractive force between the molecules can be ignored All molecules obey laws of classical mechanics E
Slide 16 / 66 16 Internal energy of an ideal gas depends on: I. the volume of the ideal gas. III. the pressure of the ideal gas III. the absolute temperature of the ideal gas. A I II B III C I and II D I, II, and III E Slide 17 / 66 17 A sample of ideal gas has an internal energy U and is then compressed to one-half of its original volume while the temperature stays the same. What is the new internal energy of the ideal gas in terms of U? A U U/2 B U/4 C 2U D 4U E Slide 18 / 66 18 An ideal gas with an internal energy U initially at 0 O C is heated to 273 C. What is the new internal energy in terms of U? A U U/2 B U/4 C 2U D E 4U
Slide 19 / 66 19 Mechanical equivalent is associated with: A Newton Kelvin B Joule C Boltzmann D Avogadro E Slide 20 / 66 20 Three containers filled with 1 kg each of: water, ice, and water vapor are at the same temperature T = 0 C. Which of the following is true about the internal energy of the substances? A U water > U ice > U vapor U water < U ice > U vapor B U water = U ice = U vapor C D U water < U ice < U vapor U ice < U water < U vapor E Slide 21 / 66 21 A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even without direct contact with the liquid. This phenomenon can be explained by: Thermal Expansion A Conduction B C Convection D Radiation Emission E
Slide 22 / 66 22 The process of heat transfer from object to another object because of molecular motion and interaction is called: A Convection Conduction B Radiation C D Induction None of the above E Slide 23 / 66 23 A hot object with a temperature of T1 is connected to a cool object with a temperature of T2. The object used to conduct the heat has a length L and a cross-sectional area A. The rate of heat flow is: A A(T 1 – T 2 )/kL B k(T 1 – T 2 )/AL C kAL/(T 1 – T 2 ) D kL(T 1 – T 2 )/A E kA(T 1 – T 2 )/L Slide 24 / 66 24 When we touch a piece of metal and a piece of wood that are placed in the same room, the piece of metal feels much colder than the piece of wood. This happens because of the difference in: Specific Heat A Temperature B C Density Thermal Conductivity D Latent Heat E
Slide 25 / 66 25 The process of heat transfer by the movement of mass from one place to another is called: A Convection B Conduction C Radiation D Induction None of the above E Slide 26 / 66 26 Which mechanism of heat transfer is involved in heating a pot with water on a stove? A Convection Conduction B Radiation C Induction D None of the above E Slide 27 / 66 27 Which mechanism of heat transfer is involved in heat flow from the Sun to the Earth? A Convection Conduction B Radiation C Induction D None of the above E
Slide 28 / 66 28 If the absolute temperature of a radiating object is doubled, by what factor does the rate of energy emission change? A 2 4 B 8 C D 16 32 E Slide 29 / 66 29 The state of an ideal gas changed isothermally from position 1 to position 2 is shown below. What is the change in the internal energy of the gas during the process? A ΔU = W ΔU = Q B ΔU > 0 C ΔU = 0 D ΔU < 0 E Slide 30 / 66 30 An ideal gas is taken from state 1 to state 2 and then to state 3. If the process 1-2 is adiabatic and 2-3 is isothermal, what is a true statement about the change in temperature and heat transferred during 1-2? A ΔT > 0, Q > 0 ΔT < 0, Q = 0 B C ΔT = 0, Q = 0 ΔT > 0, Q < 0 D ΔT = 0, Q < 0 E
Slide 31 / 66 31 The state of an ideal gas is changed in a closed path 1→2→3→4→1. Which of the following is true about work done on the gas? Work 1→2 Work 2→3 Work 3→4 Work 4→1 A W > 0 W = 0 W < 0 W = 0 W < 0 W = 0 W = 0 W > 0 B W < 0 W = 0 W > 0 W = 0 C W = 0 W > 0 W = 0 W < 0 D W = 0 W < 0 W = 0 W > 0 E Slide 32 / 66 32 The change of the state of an ideal gas is presented by the diagram. What is the ratio between work done on the gas during the process 2→3 and the work done on the gas during the process 4→1? A 2/1 1/2 B 4/1 C 1/4 D E 3/1 Slide 33 / 66 33 An ideal gas is taken through a closed path 1→2→ 3→4→1. What is the net work done by the gas? A 6PV 9PV B 4PV C -6PV D -9PV E
Slide 34 / 66 34 Which of the following is a characteristic of an adiabatic process? A ΔU = 0 B W = 0 Q = 0 C ΔV = 0 D ΔP = 0 E Slide 35 / 66 35 A sample of an ideal gas taken through a closed cycle is presented by the P-V diagram. The process 1-2 is perfectly isothermal. which of the following is true about the change in internal energy and work done by the gas during the process 1-2? A Δ U = 0 W by the gas > 0 B Δ U > 0 W by the gas = 0 C Δ U < 0 W by the gas < 0 D Δ U = 0 W by the gas = 0 Δ U = 0 W by the gas < 0 E Slide 36 / 66 36 A sample of an ideal gas taken through a closed cycle is presented by the P-V diagram. The process 1-2 is perfectly isothermal. which of the following is true about the change in internal energy and work done by the gas during the process 3-1? A Δ U = 0 Q > 0 Δ U > 0 Q > 0 B C Δ U < 0 Q < 0 D Δ U = 0 Q = 0 Δ U = 0 Q < 0 E
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