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 Heating Simultaneous pressure & temperature change Cooling Both B and C Heating Simultaneous pressure & temperature change ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Entropy of the system decreases, when A gas expands spontaneously from high pressure to low pressure Snow melts into water Water is converted into ice Both B & C A gas expands spontaneously from high pressure to low pressure Snow melts into water Water is converted into ice Both B & C ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The third law of thermodynamics states that the Gases having same reduced properties behave similarly Heat capacity of a crystalline solid is zero at absolute zero temperature None of these Heat transfer from low temperature to high temperature source is not possible without external work Gases having same reduced properties behave similarly Heat capacity of a crystalline solid is zero at absolute zero temperature None of these Heat transfer from low temperature to high temperature source is not possible without external work 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 and temperature must be kept below 5.2 atm. and - 57°C respectively Pressure must be kept below 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 and temperature must be kept below 5.2 atm. and - 57°C respectively Pressure must be kept below 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 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Change of state namely evaportation condensation, freezing and melting is an __________ process. Adiabatic Isothermal Isobaric Isochoric Adiabatic Isothermal Isobaric Isochoric ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The expression, nCv(T₂ - T₁), is for the __________ of an ideal gas. None of these Compressibility Co-efficient of thermal expansion Work done under adiabatic condition None of these Compressibility Co-efficient of thermal expansion Work done under adiabatic condition ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS