A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂.(where, P₁ and P₂ are initial and final pressures respectively)

Chemical Engineering Thermodynamics
A two stage compressor is used to compress an ideal gas. The gas is cooled to the initial temperature after each stage. The intermediate pressure for the minimum total work requirement should be equal to the __________ mean of P₁ and P₂.(where, P₁ and P₂ are initial and final pressures respectively)

Harmonic

Geometric

Arithmetic

Logarithmic

Harmonic

Geometric

Arithmetic

Logarithmic

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics
A change in state involving a decrease in entropy can be spontaneous, only if

It is exothermic

It takes place isothermally

It is isenthalpic

It takes place at constant volume

It is exothermic

It takes place isothermally

It is isenthalpic

It takes place at constant volume

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

Its internal energy (U) decreases and its entropy (S) increases

U is constant but S decreases

U and S both decreases

U decreases but S is constant

Its internal energy (U) decreases and its entropy (S) increases

U is constant but S decreases

U and S both decreases

U decreases but S is constant

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics
For an ideal liquid solution, which of the following is unity?

Activity

Fugacity

Activity co-efficient

Fugacity co-efficient

Activity

Fugacity

Activity co-efficient

Fugacity co-efficient

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

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

Its vapor pressure at the condenser temperature should be very high

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 of entropy

Decrease in enthalpy corresponding to evolution of heat

Increase in enthalpy corresponding to absorption of heat

No change in enthalpy

Decrease of entropy

Decrease in enthalpy corresponding to evolution of heat

ANSWER DOWNLOAD EXAMIANS APP

Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics A change in state involving a decrease in entropy can be spontaneous, only if

Chemical Engineering Thermodynamics A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

Chemical Engineering Thermodynamics For an ideal liquid solution, which of the following is unity?

Chemical Engineering Thermodynamics Which of the following is an undesirable characteristics of a refrigerant ?

Chemical Engineering Thermodynamics The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

Chemical Engineering Thermodynamics
A change in state involving a decrease in entropy can be spontaneous, only if

Chemical Engineering Thermodynamics
A closed system is cooled reversibly from 100°C to 50°C. If no work is done on the system

Chemical Engineering Thermodynamics
For an ideal liquid solution, which of the following is unity?

Chemical Engineering Thermodynamics
Which of the following is an undesirable characteristics of a refrigerant ?

Chemical Engineering Thermodynamics
The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by