The kinetic energy of gas molecule is zero at_____________________?
The kinetic energy of gas molecule is zero at_____________________?
A. 0°C
B. 273°C
C. 100°C
D. -273°C
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Pick out the undesirable property for a good refrigerant ?
Pick out the undesirable property for a good refrigerant ?A. High thermal conductivity
B. Low freezing point
C. Large latent heat of vaporisation
D. High viscosityAt constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is____________________?
At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is____________________?A. Zero
B. One
C. Infinity
D. NegativeAdiabatic compression of a saturated water vapour makes it ____________________ ?
Adiabatic compression of a saturated water vapour makes it ____________________ ?A. Supersaturated
B. Superheated
C. Both A. and B
D. Neither A. nor BThe gas law (PV = RT) is true for an ______________ change?
The gas law (PV = RT) is true for an ______________ change?A. Isothermal
B. Adiabatic
C. Both A. & B
D. Neither A. nor BGases are cooled in Joule-Thomson expansion, when it is _____________ inversion temperature?
Gases are cooled in Joule-Thomson expansion, when it is _____________ inversion temperature?A. Below
B. At
C. Above
D. Either B. or C.Which one is true for a throttling process ?
Which one is true for a throttling process ?A. A gas may have more than one inversion temperatures
B. The inversion temperature is different for different gases
C. The inversion temperature is same for all gases
D. The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity