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Thermodynamics Questions - All Grades

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Grade 12 Thermodynamics
Which of the following expressions provides the correct conversion between Joules and Calories?
  1. 1 Joule (J) = 0.239 Cal
  2. 1 Joule (J) = 0.547 Cal
  3. 1 Joule (J) = 0.345 Cal
  4. 1 Joule (J) = 0.451 Cal
Grade 12 Thermodynamics
In which of the following systems does the temperature of the process remain constant throughout the system?
  1. Isotherm process
  2. Adiabatic process
  3. Reversible process
  4. Irreversible process
Grade 11 Thermodynamics
When calculating average kinetic energy using the equation KEavg=32(kT), which of the following does k stand for?
  1. Ideal Gas constant
  2. Boltzmann constant
  3. Planck's constant
  4. Gay-Lussac constant
Grade 12 Thermodynamics
In which of the following cases would ∆U in ∆U=Q+W be less than zero?
  1. Work is done on the system.
  2. Work is done by the system.
  3. The magnitudes of heat and work are equivalent.
  4. The magnitude of heat is greater than that of the work.
Grade 11 Thermodynamics
Which of the following represents the Boltzmann constant's SI unit?
  1. Moles per Joule
  2. Joules per Kelvin
  3. Joules Kelvin
  4. Newtons per Kelvin
Grade 11 Thermodynamics
What is the value of the Boltzmann constant in the non-standard units, electronvolts (eV) per degree K?
  1. 8.617×10−5
  2. 1.38×10−23
Grade 12 Thermodynamics
Which of the following conditions represents "standard state free energy of reaction" for a spontaneous reaction?
  1. ΔG0>0
  2. ΔG0<0
  3. ΔG0=0
  4. ΔG0>1
Grade 12 Thermodynamics
Which of the following is an example of an irreversible process?
  1. boiling of water
  2. chemical reaction in an insulated vessel
  3. expansion of gas infinitesimally slowly
  4. downhill flow of water
Grade 6 Thermodynamics
What is the difference between temperature and heat?
  1. Temperature is measured by a thermometer, and heat is measured by a barometer.
  2. Heat is measured in calories and temperature is measured in joules.
  3. Temperature measures the motion of molecules, and heat is the energy of that motion.
  4. Heat is caused by the Sun, and temperature is caused by conditions in the atmosphere.
Grade 2 Thermodynamics
What happens to water when it cools to lower temperatures?
  1. It evaporates
  2. It freezes
  3. It melts
  4. Nothing happens
Grade 2 Thermodynamics
What happens to water when it was heated?
  1. It cools
  2. It evaporates
  3. It melts
  4. Nothing happens
Grade 2 Thermodynamics
Solids vaporize as it freezes.
  1. True
  2. False
Grade 11 Thermodynamics
Which situation is a good example of the transfer of energy through radiation?
  1. A fan cools the CPU in a computer.
  2. Energy passes from one person’s hand to another person when they shake hands.
  3. Warm air that is less dense rises to the ceiling of a room.
  4. A snake’s body temperature increases when the snake lies in the Sun.
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