Chemical Engineering Thermodynamics Which of the following is an undesirable characteristics of a refrigerant ? Its vapor pressure at the condenser temperature should be very high None of these It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils It should be non-explosive Its vapor pressure at the condenser temperature should be very high None of these It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils It should be non-explosive 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. Cooling Both B and C Simultaneous pressure & temperature change Heating Cooling Both B and C Simultaneous pressure & temperature change Heating ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Work done in an adiabatic process between two states depends on the End states only Rate of heat transmission Initial state only None of these End states only Rate of heat transmission Initial state only None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The most important application of distribution law is in Liquid extraction Drying Evaporation Distillation Liquid extraction Drying Evaporation Distillation ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Compound having large heat of formation is Less stable Either more or less stable ; depends on the compound More stable Not at all stable (like nascent O₂) Less stable Either more or less stable ; depends on the compound More stable Not at all stable (like nascent O₂) ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in Decreased COP Increased COP Increased or decreased COP ; depending upon the type of refrigerant Same COP Decreased COP Increased COP Increased or decreased COP ; depending upon the type of refrigerant Same COP ANSWER DOWNLOAD EXAMIANS APP
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