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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.

When an unsaturated air-water mixture is heated at constant pressure, then ____________________ ?

A The partial pressure of water vapour increases

B The specific humidity decreases

C The relative humidity increases

D The relative humidity decreases

Review Detailed Answer

Correct Answer: The relative humidity decreases

Danckwerts developed the ____________________ theory?

A Penetration

B Surface renewal

C Film

D None of these

Review Detailed Answer

Correct Answer: Surface renewal

Leaching of coarse solid lumps is also termed as _____________________?

A Decoction

B Dissolution

C Percolation

D Agitation and settling

Review Detailed Answer

Correct Answer: Percolation

Steam distillation is used to__________________?

A Reduce the number of plates

B Avoid thermal decomposition of a component

C Increase the efficiency of separation

D Increase the total pressure of distillation

Review Detailed Answer

Correct Answer: Avoid thermal decomposition of a component

Which of the following can be calculated theoretically using steam table and Dalton’s law of partial pressure; if the relative humidity and dry bulb temperature of moist air is known ?

A Dew point

B Humidity ratio

C Wet bulb temperature

D None of these

Review Detailed Answer

Correct Answer: Wet bulb temperature

In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as ___________________ ?

A KG = 1/KG + m/KL

B 1/KG = 1/KG + m/KL

C 1/KG = 1/KL + m/KG

D KG = 1/KL + m/KG

Review Detailed Answer

Correct Answer: KG = 1/KG + m/KL

Rayleigh equation applies to _________________ distillation ?

A Differential

B Flash

C Equilibrium

D Molecular

Review Detailed Answer

Correct Answer: Differential

What is the degree of freedom of an absorption process in which only one component is transferred between phases ?

A 1

B 2

C 3

D 4

Review Detailed Answer

Correct Answer: 3

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

A Cost

B Availability

C Toxicity

D Selectivity

Review Detailed Answer

Correct Answer: Selectivity

At 750°K and 1 atm, the approximate value of Schmidt number for air is_________________?

A 0.01

B 0.1

C 1

D 10

Review Detailed Answer

Correct Answer: 0.1

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

When an unsaturated air-water mixture is heated at constant pressure, then ____________________ ?

Danckwerts developed the ____________________ theory?

Leaching of coarse solid lumps is also termed as _____________________?

Steam distillation is used to__________________?

Which of the following can be calculated theoretically using steam table and Dalton’s law of partial pressure; if the relative humidity and dry bulb temperature of moist air is known ?

In a vapor-liquid contacting equipment, the overall gas phase mass transfer co-efficient (M.T.C), KG is related to individual co-efficients (KG and KL) as ___________________ ?

Rayleigh equation applies to _________________ distillation ?

What is the degree of freedom of an absorption process in which only one component is transferred between phases ?

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

At 750°K and 1 atm, the approximate value of Schmidt number for air is_________________?