Chemical Engineering Thermodynamics Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)? Ammonia Freon Liquid sulphur dioxide Methyl chloride Ammonia Freon Liquid sulphur dioxide Methyl chloride ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature. Increases Decreases logarithmically Decreases Remains constant Increases Decreases logarithmically Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics In any spontaneous process, Both F and A decreases Only F decreases Only A decreases Both F and A increase Both F and A decreases Only F decreases Only A decreases Both F and A increase ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Out of the following refrigeration cycles, which one has maximum COP? Carnot cycle Ordinary vapor compression cycle Vapor compression with a reversible expansion engine Air cycle Carnot cycle Ordinary vapor compression cycle Vapor compression with a reversible expansion engine Air cycle ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Specific volume of an ideal gas is None of these The reciprocal of its density Equal to its density Proportional to pressure None of these The reciprocal of its density Equal to its density Proportional to pressure ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process: Δ H = 0 and ΔS = 0 Δ H = 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS = 0 Δ H = 0 and ΔS = 0 Δ H = 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS ≠ 0 Δ H ≠ 0 and ΔS = 0 ANSWER DOWNLOAD EXAMIANS APP
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