A. SO2
B. NH3
C. CCl2F2
D. C2H4Cl2
Related Mcqs:
- Which of the following is not a common refrigerant ?
A. Freon-12
B. Ethylene
C. Ammonia
D. Carbon dioxide - An ideal liquid refrigerant should______________________?
A. Not have a sub-atmospheric vapour pressure at the temperature in the refrigerator coils
B. Not have unduly high vapour pressure at the condenser temperature
C. Both A. and B
D. Have low specific heat - Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor) ?
A. Freon
B. Liquid sulphur dioxide
C. Methyl chloride
D. Ammonia - 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 viscosity - High _____________ is an undesirable property for a good refrigerant?
A. Specific heat
B. Latent heat of vaporisation
C. Viscosity
D. Specific vapor volume - Which of the following is an undesirable characteristic of a refrigerant ?
A. It should be non-explosive
B. It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
C. Its vapor pressure at the condenser temperature should be very high
D. None of these - The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H – P. This equation is called the ___________________?
A. Maxwell’s equation
B. Thermodynamic equation of state
C. Equation of state
D. Redlich-Kwong equation of state - Fugacity and pressure are numerically equal, when the gas is____________________?
A. In standard state
B. At high pressure
C. At low temperature
D. In ideal state - The internal energy of an ideal gas is a function of its _____________ only?
A. Molecular size
B. Volume
C. Pressure
D. Temperature - While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is _______________?
A. Infinity
B. Unity
C. Constant
D. Negative
