Thermal Physics

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Write true or false: (Q1 - Q10)
1. For a given heat in liquid, the apparent expansion is more than that of real expansion.
2. Thermal energy always flows from a system at higher temperature to a system at lower temperature.
3. According to Charles’s law, at constant pressure, the temperature is inversely proportional to volume.
4. According to Avogadro's law, equal volumes of all gases under same pressure have equal numbers of molecules.
5. Boltzmann's constant k is equal to the product of universal gas constant R and Avogadro number (NA).
6. Number of molecules N in a gas is equal to the product of the number mole (n) of gas and Avogadro's number (NA).
7. A gas which obeys the relation PV = nRT at all temperature and pressure is called real gas.
8. If Q calorie heat is produced by spending mechanical work W then the mechanical equivalent of heat J = W × Q.
9. The SI unit of coefficient of thermal expansion is per kelvin.
10. The real expansion of a liquid is equal to the difference between apparent expansion and expansion of the vessel.