A. Is the most efficient of all refrigeration cycles
B. Has very low efficiency
C. Requires relatively large quantities of air to achieve a significant amount of refrigeration
D. Both B. and C
A. Free energy
B. Entropy
C. Refractive index
D. None of these
A. Ethyl chloride or methyl chloride
B. Freon-12
C. Propane
D. NH3 or CO2
A. Infinity
B. Unity
C. Constant
D. Negative
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
A. 5.2
B. 6.2
C. 0.168
D. Data insufficient, can’t be found out
A. Reaction mechanism
B. Calculation of rates
C. Energy transformation from one form to another
D. None of these
A. Fugacity
B. Activity co-efficient
C. Free energy
D. All A, B. & C
A. Pressure to critical pressure
B. Critical pressure to pressure
C. Pressure to pseudocritical pressure
D. Pseudocritical pressure to pressure
A. Increase
B. Decrease
C. No change
D. None of these