Chemical Engineering Thermodynamics Throttling process is a/an __________ process. Reversible and constant entropy Reversible and constant enthalpy Irreversible and constant enthalpy Reversible and isothermal Reversible and constant entropy Reversible and constant enthalpy Irreversible and constant enthalpy Reversible and isothermal ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics Law of corresponding states says that No gas can be liquified above the critical temperature, howsoever high the pressure may be The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature , two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories) No gas can be liquified above the critical temperature, howsoever high the pressure may be The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature , two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories) 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 Increased or decreased COP ; depending upon the type of refrigerant Decreased COP Same COP Increased COP Increased or decreased COP ; depending upon the type of refrigerant Decreased COP Same COP Increased COP ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A cyclic engine exchanges heat with two reservoirs maintained at 100 and 300°C respectively. The maximum work (in J) that can be obtained from 1000 J of heat extracted from the hot reservoir is 1000 667 651 349 1000 667 651 349 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is Zero None of these Positive Negative Zero None of these Positive Negative ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Thermodynamics The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by Increase in enthalpy corresponding to absorption of heat No change in enthalpy Decrease in enthalpy corresponding to evolution of heat Decrease of entropy Increase in enthalpy corresponding to absorption of heat No change in enthalpy Decrease in enthalpy corresponding to evolution of heat Decrease of entropy ANSWER DOWNLOAD EXAMIANS APP
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