Chemical Engineering Thermodynamics Heat of formation of an element in its standard state is > 0 A function of pressure < 0 > 0 A function of pressure < 0 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For an exothremic reaction Enthalpy change is zero Only enthalpy change (ΔH) is negative Only internal energy change (ΔE) is negative Both ΔH and ΔE are negative Enthalpy change is zero Only enthalpy change (ΔH) is negative Only internal energy change (ΔE) is negative Both ΔH and ΔE are negative ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics An ideal liquid refrigerant should Not have unduly high vapour pressure at the condenser temperature Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils Have low specific heat Both A and B Not have unduly high vapour pressure at the condenser temperature Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils Have low specific heat Both A and B 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 Its internal energy (U) decreases and its entropy (S) increases U and S both decreases U is constant but S decreases U decreases but S is constant Its internal energy (U) decreases and its entropy (S) increases U and S both decreases U is constant but S decreases ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Isentropic process means a constant __________ process. Entropy Pressure None of these Enthalpy Entropy Pressure None of these Enthalpy ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics (∂T/∂P)H is the mathematical expression for Joule-Thompson co-efficient Specific heat at constant pressure (Cp) None of these Specific heat at constant volume (Cv) Joule-Thompson co-efficient Specific heat at constant pressure (Cp) None of these Specific heat at constant volume (Cv) ANSWER DOWNLOAD EXAMIANS APP
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