Chemical Engineering Thermodynamics The expression for entropy change given by, ΔS = nR ln (V₂/V₁) + nCv ln (T₂/T₁) is valid for Reversible isothermal volume change Heating of a substance Cooling of a substance Simultaneous heating and expansion of an ideal gas Reversible isothermal volume change Heating of a substance Cooling of a substance Simultaneous heating and expansion of an ideal gas ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Partial molal quantities are important in the study of A pure component Ideal gases Non-ideal mixtures Ideal solutions A pure component Ideal gases Non-ideal mixtures Ideal solutions ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Work done in case of free expansion is Indeterminate Zero Negative None of these Indeterminate Zero Negative None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when N = y = 1.4 N = 1 N = 0 N = 1.66 N = y = 1.4 N = 1 N = 0 N = 1.66 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics An ideal liquid refrigerant should Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils Not have unduly high vapour pressure at the condenser temperature Both A and B Have low specific heat Not have a subatmospheric vapour pressure at the temperature in the refrigerator coils Not have unduly high vapour pressure at the condenser temperature Both A and B Have low specific heat ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is Ax₂ A . x₂² Ax₁² Ax₁ Ax₂ A . x₂² Ax₁² Ax₁ ANSWER DOWNLOAD EXAMIANS APP
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