For a constant volume process ____ by the system is used only to increase the internal energy:
A. Heat absorbed
B. Work done
C. Both A. & B
D. Neither A. nor B
Internal energy of an element at 1 atm and 25° C is _____ kcal/kg.mole:
A. 0
B. 273
C. 25
D. None of these
Which of the following processes cannot be made reversible even under ideal condition of operation:
A. Free expansion of a gas
B. Compression of air in a compressor
C. Expansion of steam in a turbine
D. All (A), B. & (C)
Joule-Thomson co-efficient depends on the:
A. Pressure
B. Temperature
C. Both A. & B
D. Neither A. nor B
The enthalpy change when ammonia gas is dissolved in water is called the heat of:
A. Solution
B. Formation
C. Dilution
D. Combustion
______ increases with increase in pressure:
A. The melting point of wax
B. The boiling point of a liquid
C. Both A. and B
D. Neither A. nor B
For organic compounds, group contribution method can be used for the estimation of:
A. Critical properties
B. Specific gravity
C. Specific volume
D. Thermal conductivity
The value of Cp and Cv respectively for monatomic gases in Kcal/kg Mole.°K are:
A. 5 & 3
B. 3.987 & 1.987
C. 1.987 & 0.66
D. 0.66 & 1.987
The temperature at the eutectic point of the system is the ____ temperature that can be attained in the system:
A. Lowest
B. Highest
C. Average
D. None of these
For an ideal gas, the internal energy depends upon its _____ only:
A. Molecular size
B. Temperature
C. Volume
D. Pressure
