Chemical Engineering Thermodynamics Which of the following is an undesirable characteristics of a refrigerant ? It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils None of these Its vapor pressure at the condenser temperature should be very high It should be non-explosive It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils None of these Its vapor pressure at the condenser temperature should be very high It should be non-explosive ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is More in liquid phase Same in both the phases More in vapour phase Replaced by chemical potential which is more in vapour phase More in liquid phase Same in both the phases More in vapour phase Replaced by chemical potential which is more in vapour phase ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Throttling process is a/an __________ process. Reversible and constant enthalpy Reversible and constant entropy Irreversible and constant enthalpy Reversible and isothermal Reversible and constant enthalpy Reversible and constant entropy Irreversible and constant enthalpy Reversible and isothermal ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The co-efficient of performance (COP) of a refrigerating system, which is its index of performance, is defined as the ratio of useful refrigeration to the net work. The units of __________ and COP are the same. Work Temperature Kinematic viscosity None of these Work Temperature Kinematic viscosity None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)? Methyl chloride Ammonia Freon Liquid sulphur dioxide Methyl chloride Ammonia Freon Liquid sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process. Polytropic Adiabatic Isentropic Isothermal Polytropic Adiabatic Isentropic Isothermal ANSWER DOWNLOAD EXAMIANS APP
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