36. The temperature at which a substance changes phase from liquid to gas is called the:
a) Melting point
b) Boiling point
c) Freezing point
d) Triple point
37. The triple point of a substance is the point at which:
a) It changes phase from liquid to gas
b) It changes phase from solid to liquid
c) It changes phase from gas to liquid
d) All three phases coexist in equilibrium
38. The heat transfer from a hotter object to a colder object is an example of:
a) Adiabatic process
b) Isothermal process
c) Heat conduction
d) Heat convection
39. The heat transfer through a fluid due to the movement of its particles is called:
a) Conduction
b) Convection
c) Radiation
d) Both conduction and convection
40. The efficiency of a Carnot engine is independent of the:
a) Temperature of the hot reservoir
b) Temperature of the cold reservoir
c) Difference in temperature between the hot and cold reservoirs
d) None of the above
