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 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 U and S both decreases U decreases but S is constant 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)? Liquid sulphur dioxide Methyl chloride Ammonia Freon Liquid sulphur dioxide Methyl chloride Ammonia Freon ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Entropy change of mixing two liquid substances depends upon the Both A and B Molar concentration Quantity (i.e. number of moles) Neither A nor B Both A and B Molar concentration Quantity (i.e. number of moles) Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Rotary lime kiln is an example of a/an __________ system. Non-thermodynamic Closed Isolated Open Non-thermodynamic Closed Isolated Open ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while freezing. Contracts Either A, B or C Expands Does not change in volume Contracts Either A, B or C Expands Does not change in volume ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics At the critical point of a substance Liquid and vapour have the same density The surface tension vanishes There is no distinction between liquid and vapour phases All of these Liquid and vapour have the same density The surface tension vanishes There is no distinction between liquid and vapour phases All of these ANSWER DOWNLOAD EXAMIANS APP