WorksheetsTHERMODYNAMICS MIDTERM EXAMINATION
Total questions: 40
Worksheet time: 38mins
Multiple Choice: Select the correct answer by writing the letter on the space provided. The fact that a thermometer "takes its own temperature" illustrates
the difference between heat and thermal energy.
the fact that molecules are constantly moving.
thermal equilibrium.
energy conservation.
Multiple Choice: Select the correct answer by writing the letter on the space provided. The moderate temperatures of islands throughout the world has much to do with water's
poor conductivity.
high specific heat capacity.
vast supply of thermal energy.
absorption of solar energy.
Multiple Choice: Select the correct answer by writing the letter on the space provided. Pour a liter of water at 40°C into a liter of water at 20°C and the final temperature of the two becomes
more than 30°C
less than 30°C
at or about 30°C
None of the above
Multiple Choice: Select the correct answer by writing the letter on the space provided. When a gas is changed to a liquid phase, the gas
releases energy.
absorbs energy.
neither releases nor absorbs energy.
None of these.
Multiple Choice: Select the correct answer by writing the letter on the space provided. When a volume of air is compressed, its temperature
increases.
decreases.
neither increases nor decreases.
None of these.
Multiple Choice: Select the correct answer by writing the letter on the space provided. If glass expanded more than mercury, then the column of mercury in a mercury thermometer would rise when the temperature
increases.
decreases.
neither of these
remains the same
Multiple Choice: Select the correct answer by writing the letter on the space provided. If you run a refrigerator in a closed room with the refrigerator door open, the room temperature will
increase.
decrease.
remain unchanged.
neither of these
Multiple Choice: Select the correct answer by writing the letter on the space provided. Suppose you put a closed, sealed can of air on a hot stove burner. The contained air will undergo an increase in
pressure.
temperature.
thermal energy.
all of these
Multiple Choice: Select the correct answer by writing the letter on the space provided. The fact that desert sand is very hot in the day and very cold at night is evidence that sand has a
high specific heat capacity.
low specific heat capacity.
thermal energy.
all of these
Multiple Choice: Select the correct answer by writing the letter on the space provided. Consider a sample of water at 0°C. If the temperature is slightly increased, the volume of water
remains the same.
expands.
contracts.
neither of these
Multiple Choice: Select the correct answer by writing the letter on the space provided. When 100 J of heat is added to a system that performs 60 J of work, the thermal energy change of the system is
40 J.
0 J.
100 J.
60 J.
Multiple Choice: Select the correct answer by writing the letter on the space provided. Increasing the temperature of 50 grams of water by 1°C requires
1 calorie.
50 calories.
25 calories.
10 calories
Multiple Choice: Select the correct answer by writing the letter on the space provided. Aluminum has specific heat capacity of
450 J kg^-1 °C^-1
900 J kg^-1 °C^-1
1350 J kg^-1 °C^-1
1800 J kg^-1 °C^-1
Multiple Choice: Select the correct answer by writing the letter on the space provided. Internal energy comprises of two types of energies, those are
Mechanical and electrical energy
Magnetic and electrical energy
Kinetic and potential energy
Kinetic and magnetic energy
Multiple Choice: Select the correct answer by writing the letter on the space provided. Unit for specific latent heat is
Watts per Joule
Joules per Watt
Joules per Kilogram
Pascal per Watt
Multiple Choice: Select the correct answer by writing the letter on the space provided. Lv is the symbol for
Latent heat of Fusion
Specific Latent Heat of Vaporization
Specific Latent Heat of Fusion
Latent Heat of Vaporization
Multiple Choice: Select the correct answer by writing the letter on the space provided. Reverse process of boiling point is
Boiling
Solidification
Condensation
Sublimation
Multiple Choice: Select the correct answer by writing the letter on the space provided. Process in which liquid turned to solid is termed as
Melting
Boiling
Freezing
Condensation
Multiple Choice: Select the correct answer by writing the letter on the space provided. A solid of mass 120 kg has the heat capacity of 3600 J K^-1, the specific heat capacity of the solid would be
30 J kg^-1 °C^-1
60 J kg^-1 °C^-1
90 J kg^{-1} °C^{-1}
Turning of liquid into gas is termed as
Melting
Boiling
Freezing
Condensation
During the process of boiling, energy conversion that takes place is
Kinetic energy to Thermal energy
Thermal energy to Kinetic energy
Potential energy to Kinetic energy
Kinetic energy to Potential energy
Thermal energy absorbed without any change in temperature in boiling is termed as
Latent heat of Fusion
Latent heat of Fission
Latent heat of Vaporization
Heat capacity of Vaporization
Kinetic component in matter is
Directly proportional to mass
Inversely proportional to mass
Directly proportional to temperature
Inversely proportional to temperature
The amount of thermal energy required to change a solid to liquid state and vice versa without any change in temperature is termed as
Latent Heat of Fusion
Latent Heat of Vaporization
Heat Capacity
Specific Heat Capacity
Unit of Specific latent heat of vaporization is
Kelvin per kilogram
Pascal per kilogram
Joules per kilogram
Ohms per kilogram
If a thermometer is allowed to come to equilibrium with the air, and a glass of water is not in equilibrium with the air, what will happen to the thermometer reading when it is placed in the water?
A pressure cooker contains water and steam in equilibrium at a pressure greater than atmospheric pressure. How does this greater pressure increase cooking speed?
Pouring cold water into hot glass or ceramic cookware can easily break it. What causes the breaking? Explain why Pyrex®, a glass with a small coefficient of linear expansion, is less susceptible.
When heat transfers into a system, is the energy stored as heat? Explain briefly.
Aluminum metal melts at 660.37 C. What is the temperature in Kelvin?
(a)
Gallium is a metal that can melt in your hand at 302.93 K. What is the temperature in Celsius?
(a)
Body temperature is 98.6 F. What is the temperature in Celsius?
(a)
Room temperature is often used in calculations as 300 K. What is the temperature in Fahrenheit?
(a)
Oxygen has a boiling point of 90.19 K. What is the temperature in Fahrenheit?
(a)
A general rule of thumb used by pilots is for every 1,000 feet of altitude, the temperature falls 3.5 F. If the temperature at sea level is 78 F, what would you expect the temperature to be at 10,000 feet in Celsius?
(a)
Pure iron melts at 1,535 C. What is the temperature in Fahrenheit?
(a)
At what temperature have the Celsius and Fahrenheit readings the same numerical value?
(a)
Sodium metal has a very wide liquid range, melting at 98°C and boiling at 892°C. Express the liquid range in degrees Celsius, kelvins, and degrees Fahrenheit.
The volume of a 6 × 12‑ft tank is 339.3 cu ft. It contains air at 200 psig and 85°F. How many 1‑cu ft drums can be filled at 50 psig and 80°F if it is assumed that the air temperature in the tank remains at 85°F? The drums have been sitting around in the atmosphere which is at 14.7 psia and 80°F.
It is planned to lift and move logs from almost inaccessible forest areas by means of balloons. Helium at atmospheric pressure (101.325 kPa) and temperature 21.1°C is to be used in the balloons. What minimum balloon diameter (assume spherical shape) will be required for a gross lifting force of 20 metric tons?
