Chemical Engineering Thermodynamics The absolute entropy for all crystalline substances at absolute zero temperature is Negative More than zero Indeterminate Zero Negative More than zero Indeterminate Zero 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 decreases but S is constant U is constant but S decreases U and S both decreases Its internal energy (U) decreases and its entropy (S) increases U decreases but S is constant U is constant but S decreases U and S both decreases Its internal energy (U) decreases and its entropy (S) increases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The expression for entropy change, ΔS = n Cp . ln (T₂/T₁), is valid for the __________ of a substance. Heating Simultaneous pressure & temperature change Cooling Both B and C Heating Simultaneous pressure & temperature change Cooling Both B and C ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In a homogeneous solution, the fugacity of a component depends upon the Pressure Composition Temperature All of these Pressure Composition Temperature All of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as F = C - P - 2 P + F - C = 2 P = F - C - 2 C = P - F + 2 F = C - P - 2 P + F - C = 2 P = F - C - 2 C = P - F + 2 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is Saturated vapour Partially condensed vapour with quality of 0.9 Partially condensed vapour with quality of 0.1 Superheated vapour Saturated vapour Partially condensed vapour with quality of 0.9 Partially condensed vapour with quality of 0.1 Superheated vapour ANSWER DOWNLOAD EXAMIANS APP
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