Critical compressibility factor for all substances___________________?

Byadmin March 11, 2019August 29, 2021

Critical compressibility factor for all substances___________________?

A. Are more or less constant (vary from 0.2 to 0.3)
B. Vary as square of the absolute temperature
C. Vary as square of the absolute pressure
D. None of these

CHEMICAL ENGINEERING | Thermodynamics for Chemical

Entropy change of mixing two liquid substances depends upon the_________________?

Entropy change of mixing two liquid substances depends upon the_________________?

A. Molar concentration
B. Quantity (i.e. number of moles)
C. Both A. and B
D. Neither A. nor B

Read More Entropy change of mixing two liquid substances depends upon the_________________?
Thermodynamics for Chemical

Which of the following processes cannot be made reversible even under ideal condition of operation ?

Which of the following processes cannot be made reversible even under ideal condition of operation ?

A. Free expansion of a gas
B. Compression of air in a compressor
C. Expansion of steam in a turbine
D. All (A), B. & (C)

Read More Which of the following processes cannot be made reversible even under ideal condition of operation ?
Thermodynamics for Chemical

“The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the_________________?

“The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the_________________?

A. Lewis-Randall rule
B. Statement of Van’t Hoff Equation
C. Le-Chatelier’s principle
D. None of these

Read More “The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the_________________?
Thermodynamics for Chemical

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?

All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?

A. CO2
B. H2
C. O2
D. N2

Read More All gases during throttling process at atmospheric temperature and pressure show a cooling effect except__________________?
Thermodynamics for Chemical

Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor ?

Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor ?

A. d ln p/dt = Hvap/RT2
B. d ln p/dt = RT2/Hvap
C. dp/dt = RT2/Hvap
D. dp/dt = Hvap/RT2

Read More Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor ?
Thermodynamics for Chemical

Entropy, which is a measure of the disorder of a system, is__________________?

Entropy, which is a measure of the disorder of a system, is__________________?

A. Independent of pressure
B. Independent of temperature
C. Zero at absolute zero temperature for a perfect crystalline substance
D. All A, B. & C

Read More Entropy, which is a measure of the disorder of a system, is__________________?

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