Chemical Engineering Thermodynamics A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system U is constant but S decreases U decreases but S is constant Its internal energy (U) decreases and its entropy (S) increases U and S both decreases U is constant but S decreases U decreases but S is constant Its internal energy (U) decreases and its entropy (S) increases U and S both decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In an ideal refrigeration cycle, the change in internal energy of the fluid is Either of the above three ; depends on the nature of refrigerant +ve -ve Either of the above three ; depends on the nature of refrigerant +ve -ve ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Adiabatic compression of a saturated water vapour makes it Supersaturated Both A and B Superheated Neither A nor B Supersaturated Both A and B Superheated Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics What is the value of Joule-Thomson co-efficient for an ideal gas? ∞ +ve -ve ∞ +ve -ve ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Enthalpy 'H' is defined as H = F - TS H - E = PV None of these H = E - PV H = F - TS H - E = PV None of these H = E - PV ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 5.2 atm). Pressure must be kept below 5.2 atm Temperature must be kept above - 57°C Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C Pressure must be kept below 5.2 atm Temperature must be kept above - 57°C Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C ANSWER DOWNLOAD EXAMIANS APP
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