Chemical Engineering Thermodynamics Which of the following is an undesirable characteristics of a refrigerant ? It should be non-explosive It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils Its vapor pressure at the condenser temperature should be very high None of these It should be non-explosive It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils Its vapor pressure at the condenser temperature should be very high None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics At absolute zero temperature, the __________ of the gas is zero. None of these Mass Pressure Volume None of these Mass Pressure Volume ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point. Boiling Boyle Triple Freezing Boiling Boyle Triple Freezing ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system U and S both decreases U decreases but S is constant U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases U and S both decreases U decreases but S is constant U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Third law of thermodynamics is helpful in Prediction of the extent of a chemical reaction Calculating absolute entropies of substances at different temperature Evaluating entropy changes of chemical reaction Both B and C Prediction of the extent of a chemical reaction Calculating absolute entropies of substances at different temperature Evaluating entropy changes of chemical reaction Both B and C ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics 4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is 4 J ∞ Zero 8 J 4 J ∞ Zero 8 J ANSWER DOWNLOAD EXAMIANS APP
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