Chemical Engineering Thermodynamics A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system 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 U and S both decreases U is constant but S decreases Its internal energy (U) decreases and its entropy (S) increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Heat is added at constant pressure in an ideal __________ cycle. Brayton Both B and C Stirling Rankine Brayton Both B and C Stirling Rankine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Melting of wax is accompanied with __________ in entropy. Decrease None of these No change Increase Decrease None of these No change Increase ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In case of a close thermodynamic system, there is __________ across the boundaries. No mass transfer but heat transfer Mass and energy transfer No heat and mass transfer None of these No mass transfer but heat transfer Mass and energy transfer No heat and mass transfer None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Fugacity co-efficient of a substance is the ratio of its fugacity to Pressure Activity co-efficient Activity Mole fraction Pressure Activity co-efficient Activity Mole fraction ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Gibbs-Duhem equation Applies only to binary systems None of these Finds no application in gas-liquid equilibria involved in distillation States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure Applies only to binary systems None of these Finds no application in gas-liquid equilibria involved in distillation States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure ANSWER DOWNLOAD EXAMIANS APP
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