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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.

What is the absorptivity of a black body?

A 1

B 0

C 0.78

D 0.95

Review Detailed Answer

Correct Answer: 1

Economy of a multiple effect evaporator is not influenced much by the_______________________?

A Boiling point elevations

B Temperature of the feed

C Rate of heat transfer

D Ratio of the weight of the thin liquor to thick liquor

Review Detailed Answer

Correct Answer: Boiling point elevations

Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube___________________?

A Exit-fluid temperature > wall temperature

B Exit fluid temperature < wall temperature

C Exit fluid temperature = wall temperature

D Graetz number > 100

Review Detailed Answer

Correct Answer: Exit fluid temperature = wall temperature

In case of evaporators, liquid entrainment results primarily due to_________________?

A High vacuum in the evaporator

B High evaporation rate

C Foaming of the solution

D High heat transfer rate

Review Detailed Answer

Correct Answer: Foaming of the solution

Heat exchangers operating, when the asymptotic range is reached, ?

A Provide very large heat transfer co-efficient

B Results in making part of the heating surface inactive

C Results in abruptly increased velocity

D None of these

Review Detailed Answer

Correct Answer: Results in making part of the heating surface inactive

In counter flow compared to parallel flow, ?

A LMTD is greater

B Less surface area is required for a given heat transfer rate

C Both A. and B.

D More surface area is required for a given heat transfer rate

Review Detailed Answer

Correct Answer: Both A. and B.

Mode of heat transfer involved in the cooling of air cooled internal combustion engine is_________________?

A Conduction

B Natural convection

C Forced convection

D None of these

Review Detailed Answer

Correct Answer: Natural convection

In a single effect evaporator, the economy is________________?

A 1

B < 1

C > 1

D None of these

Review Detailed Answer

Correct Answer: 1

Small scale evaporation is done in a_________________?

A Heat exchanger

B Condenser

C Multiple effect evaporator

D Steam jacketed kettle

Review Detailed Answer

Correct Answer: Steam jacketed kettle

In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always__________________?

A < 1

B > 1

C 1

D ∞

Review Detailed Answer

Correct Answer: < 1

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

What is the absorptivity of a black body?

Economy of a multiple effect evaporator is not influenced much by the_______________________?

Asymptotic conditions is reached, when for a fluid flowing in laminar flow through a long tube___________________?

In case of evaporators, liquid entrainment results primarily due to_________________?

Heat exchangers operating, when the asymptotic range is reached, ?

In counter flow compared to parallel flow, ?

Mode of heat transfer involved in the cooling of air cooled internal combustion engine is_________________?

In a single effect evaporator, the economy is________________?

Small scale evaporation is done in a_________________?

In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always__________________?