Chemical Engineering Thermodynamics Which of the following is a widely used refrigerant in vapour compression refrigeration system (using large centrifugal compressor)? Freon Methyl chloride Ammonia Liquid sulphur dioxide Freon Methyl chloride Ammonia Liquid sulphur dioxide 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 Temperature must be kept above - 57°C 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 Pressure must be kept below 5.2 atm Temperature must be kept above - 57°C 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Internal energy change of a system over one complete cycle in a cyclic process is Zero -ve Dependent on the path +ve Zero -ve Dependent on the path +ve ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics For an exothremic reaction Only internal energy change (ΔE) is negative Only enthalpy change (ΔH) is negative Enthalpy change is zero Both ΔH and ΔE are negative Only internal energy change (ΔE) is negative Only enthalpy change (ΔH) is negative Enthalpy change is zero Both ΔH and ΔE are negative ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Sublimation temperature of dry ice (solid CO₂) is __________ °C. -78 -273 5 0 -78 -273 5 0 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics As the temperature is lowered towards the absolute zero, the value of ∂(ΔF)/∂T, then approaches That of the heat of reaction Zero Infinity Unity That of the heat of reaction Zero Infinity Unity ANSWER DOWNLOAD EXAMIANS APP
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