Thermodynamics MCQ

Below Thermodynamics quiz are Multiple Choice Questions (MCQs) type Quiz. These Thermodynamics MCQ Questions helps you to refresh your Thermodynamics, you can see the correct option by clicking on it. .
  • 1. A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?

    • 25 g
    • 30 g
    • 20 g
    • 50 g
  • 2. Which statement is true about the ENTROPY?

    • Entropy refers to DISORDER, the unusable energy that escapes a system.
    • Entropy refers to the balance of temperature among two or more systems.
    • Entropy refers to the average kinetic energy of the molecules.
    • Entropy refers to the inability to destroy or create energy. 
  • 3. Which is an example of decreasing entropy in a closed system?

    • Boiling water
    • Freezing water
    • Cells in a body coming together
    • Ice melting
  • 4. How much energy is required to completely boil away 150g of 10o C water? Use C = 4.184 J/goC for water, and Hv = 2260 J/g.

    • 56,484 J
    • 339,000 J
    • 395,484 J
    • 385,484 J
  • 5. For an adiabatic process, which of the following statements is correct?

    • a. Work, heat, and internal energy all undergo changes.
    • b. Work and heat balance each other, so that there is no change in internal energy.
    • c. No energy is transferred as heat; internal energy change is due to work.
    • d. No work is done; internal energy change is due to heat.
  • 6. What happens to particles when they are heated?

    • They speed up and spread out
    • They slow down and compress
    • They stop moving
    • They move closer together and speed up
  • 7. Which of the following gas has the highest calorific value?

    • Coal gas
    • Producer gas
    • Mond gas
    • Blast furnace gas
  • 8. The absolute zero pressure can be attained at a temperature of

    • 0°C
    • -273°C
    • 273 K
    • None of these