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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

A change in state involving a decrease in entropy can be spontaneous, only if ____________________?

A It is exothermic

B It is isenthalpic

C It takes place isothermally

D It takes place at constant volume

Review Detailed Answer

Correct Answer: It is exothermic

For a constant volume process _____________ by the system is used only to increase the internal energy?

A Heat absorbed

B Work done

C Both A. & B

D Neither A. nor B

Review Detailed Answer

Correct Answer: Heat absorbed

Internal energy of an element at 1 atm and 25° C is ____________ kcal/kg.mole?

A 0

B 273

C 25

D None of these

Review Detailed Answer

Correct Answer: 0

“Law of corresponding states” says that___________________?

A Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same

B The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at

C No gas can be liquefied above the critical temperature, howsoever high the pressure may be.

D The molar heat of energy of gas at constant volume should be nearly constant (about 3

Review Detailed Answer

Correct Answer: Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same

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)

Review Detailed Answer

Correct Answer: Free expansion of a gas

Joule-Thomson co-efficient depends on the_____________________?

A Pressure

B Temperature

C Both A. & B

D Neither A. nor B

Review Detailed Answer

Correct Answer: Both A. & B

Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?

A λb/Tb

B Tb/λb

C √(λb/Tb)

D √(Tb/λb)

Review Detailed Answer

Correct Answer: λb/Tb

The enthalpy change when ammonia gas is dissolved in water is called the heat of___________________?

A Solution

B Formation

C Dilution

D Combustion

Review Detailed Answer

Correct Answer: Solution

_______________ increases with increase in pressure?

A The melting point of wax

B The boiling point of a liquid

C Both A. and B

D Neither A. nor B

Review Detailed Answer

Correct Answer: Both A. and B

For organic compounds, group contribution method can be used for the estimation of _____________________?

A Critical properties

B Specific gravity

C Specific volume

D Thermal conductivity

Review Detailed Answer

Correct Answer: Critical properties

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A change in state involving a decrease in entropy can be spontaneous, only if ____________________?

For a constant volume process _____________ by the system is used only to increase the internal energy?

Internal energy of an element at 1 atm and 25° C is ____________ kcal/kg.mole?

“Law of corresponding states” says that___________________?

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

Joule-Thomson co-efficient depends on the_____________________?

Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?

The enthalpy change when ammonia gas is dissolved in water is called the heat of___________________?

_______________ increases with increase in pressure?

For organic compounds, group contribution method can be used for the estimation of _____________________?