Chemical Engineering Thermodynamics Out of the following refrigration cycles, which one has the minimum COP (Co-efficient of performance)? Air cycle Vapour compression with a reversible expansion engine Carnot cycle Ordinary vapour compression cycle Air cycle Vapour compression with a reversible expansion engine Carnot cycle Ordinary vapour compression cycle ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics It is desired to bring about a certain change in the state of a system by performing work on the system under adiabatic conditions. More information is needed to conclude anything about the path dependence or otherwise of the work needed The amount of work needed is independent of path The amount of work needed is path dependent Work alone can not bring out such a change of state More information is needed to conclude anything about the path dependence or otherwise of the work needed The amount of work needed is independent of path The amount of work needed is path dependent Work alone can not bring out such a change of state ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole. 142 72 192 92 142 72 192 92 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass? DQ = CvdT + PdV DE = Tds - PdV Tds = dE - PdV DQ = CpdT + Vdp DQ = CvdT + PdV DE = Tds - PdV Tds = dE - PdV DQ = CpdT + Vdp ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Choose the condition that must be specified in order to liquify CO₂ (triple point for CO₂ is - 57°C and 5.2 atm). Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C Temperature must be kept above - 57°C Pressure must be kept below 5.2 atm Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C Temperature must be kept above - 57°C Pressure must be kept below 5.2 atm Pressure and temperature must be kept below 5.2 atm. and - 57°C respectively ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics No work is done by the system, when a reaction occurs at constant Volume Temperature None of these Pressure Volume Temperature None of these Pressure ANSWER DOWNLOAD EXAMIANS APP
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