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 is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases U decreases but S is constant U and S both decreases U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases U decreases but S is constant 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 Isentropic Isothermal Adiabatic Polytropic Isentropic Isothermal Adiabatic 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 More in vapour phase Same in both the phases Replaced by chemical potential which is more in vapour phase More in liquid phase More in vapour phase Same in both the phases Replaced by chemical potential which is more in vapour phase ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following has the least thermal efficiency? Otto engine Carnot engine Diesel engine Steam engine Otto engine Carnot engine Diesel engine Steam engine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Throttling process is a/an __________ process. Reversible and isothermal 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In case of a close thermodynamic system, there is __________ across the boundaries. No heat and mass transfer No mass transfer but heat transfer Mass and energy transfer None of these No heat and mass transfer No mass transfer but heat transfer Mass and energy transfer None of these ANSWER DOWNLOAD EXAMIANS APP
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