Electrical conductivities of semi-conductors are of the order of ________ ohm/cm?

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always________?

The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system________?

Pick out the wrong statement?

The value of Steric factor ‘P’ in the equation k = PZeE/RT usually ranges from ________?

The co-efficient of discharge of an orificemeter is a function of ________?