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.Management Sciences
Category: Thermodynamics for Chemical
Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is – 57°C and 5.2 atm) ?
A. Pressure must be kept below 5.2 atm
B. Temperature must be kept above – 57°C
C. Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C
D. Pressure and temperature must be kept below 5.2 atm. and – 57°C respectively
If atmospheric temperature and dew point are nearly equal, then the relative humidity is_______________?
A. Zero
B. 50%
C. Almost 100%
D. unpredictable
Pick out the correct statement ?
A. Entropy and enthalpy are path functions
B. In a closed system, the energy can be exchanged with the surrounding, while matter cannot be
exchanged
C. All the natural processes are reversible in nature
D. Work is a state function
Pick out the correct statement?
A. If an insoluble gas is passed through a volatile liquid placed in a perfectly insulated container,
the temperature of the liquid will increase
B. A process is irreversible as long as Δ S for the system is greater than zero
C. The mechanical work done by a system is always equal to∫P.dV
D. The heat of formation of a compound is defined as the heat of reaction leading to the
formation of the compound from its reactants
Partial molar free energy of an element A in solution is same as its__________________?
A. Chemical potential
B. Activity
C. Fugacity
D. Activity co-efficient
During adiabatic expansion of gas___________________?
A. Pressure remains constant
B. Pressure is increased
C. Temperature remains constant
D. None of these
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