WorksheetsThermodynamics
Total questions: 24
Worksheet time: 12mins
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”?
First Law of Thermodynamics
Second Law of Thermodynamics
Mechanical equivalent of heat
Zeroth Law of Thermodynamics
Thermal expansion of solids
2.
Which of the following temperature scales doesn’t have negative numbers?
Celsiu
Kelvin
Reaumur
Fahrenheit
Galileo
Which of two temperature change are equivalent?
1 K = 1 F
1 F = 1 C
1 Re = 1 F
1 K = 1 C
1 Re = 1 K
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?
T1 > T2 > T3
T1 > T2 < T3
T1 < T2 < T3
T1 > T2 = T3
T1 = T2 > T3
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?
Doubles
Quadruples
Triples
Decreased to one-half
Decreased to one-fourth
A container filled with a sample of an ideal gas at the 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?
2 atm
3 atm
4 atm
5 atm
6 atm
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?
P1 > P2 > P3
P1 > P2 < P3
P1 < P2 < P3
P1 = P2 > P3
P1 > P2 = P3
The absolute temperature of an ideal diatomic gas is quadrupled. What happens to the average speed of molecules?
Quadruples
Doubles
Triples
Increases by a factor of 1.41
Stays the same
The average molecular kinetic energy of a gas depends on:
( Pressure
Volume
Temperature
Number of moles
None of the above
Kinetic Theory is based on an ideal gas model. The following statements about the ideal gas are true EXCEPT:
( The average molecular kinetic energy is directly proportional to the absolute temperature
All molecules move with the same speed
All molecules make elastic collisions with each other and the walls of the container
The attractive force between the molecules can be ignored
All molecules obey laws of classical mechanics
Internal energy of an ideal gas depends on:
i. the volume of the ideal gas
ii. the pressure of the ideal gas
iii. the absolute temperature of the ideal gas
I
II
III
I and II
I, II and III
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?
U
1/2U
1/4U
2U
4U
An ideal gas with an internal energy U initially at 0 ̊C is heated to 273 ̊C. What is the new internal energy in terms of U?
U
1/2U
1/4U
2U
4U
Three containers filled with 1 kg of each: water, ice, and water vapor at the same temperature T = 0 ̊C. Which of the following is true about the internal energy of the substances?
U water > U ice > U vapor
U water < U ice > U vapor
U water = U ice = U vapor
U water < U ice < U vapor
U ice < U water < U vapor
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:
(A) Specific heat
(B) Temperature
(C)Density
(D) Thermal conductivity
(E) Latent heat
If the absolute temperature of a radiating object is doubled, by what factor does the rate of energy emission change?
(A) 2
(B) 4
(C) 8
(D) 16
(E)32
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
(B) ΔT < 0, Q = 0
(C) ΔT = 0, Q = 0
(D) ΔT > 0, Q < 0
(E) ΔT = 0, Q < 0
The change of the state of an ideal gas is presented by the diagram. What is the ration between work done on the gas during the process 2→3 and work done on the gas during the process 4→1?
(A) 2/1
(B) 1/2
(C) 4/1
(D) 1/4
(E) 3/1
Which of the following is a characteristic of an adiabatic process?
(A) ΔU = 0
(B) W = 0
(C) Q = 0
(D) ΔV = 0
(E) ΔP = 0
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
(E) Δ U = 0 W by the gas < 0
A sample of an ideal gas is taken through a closed cycle presented by P-V diagram. The process 1-2 is perfectly isothermal. Which of the following is true about the change in internal energy and heat added to the gas during the process 3-1?
(A) Δ U = 0 Q > 0
(B) Δ U > 0 Q > 0
(C) Δ U < 0 Q < 0
(D) Δ U = 0 Q = 0
(E) Δ U = 0 Q < 0
The state of an ideal gas is changed in four different steps A→B, B→C, C→D, D→A. The gas is moved from the state C to the state D isothermally. During which process is no work done by the gas?
(A) A→B
(B) B→C
(C) C→D
(D) D→A
(E) More information is required
An ideal gas undergoes a cyclic process presented by the P-V diagram. Which of the following points has the highest temperature?
(A) A
(B) B
(C) C
(D) D
(E) E
An ideal gas can be taken from point K to point N in three different paths: K→L→N, K→N, K→M→N. Which of the following is a true statement?
(A) The same work is done during each process
(B) The same amount of heat is added to the gas during each process
(C) The same change in internal energy during each process
(D) There is no work done in the process K→N
(E) There is no change in internal energy during the process K→L→N
