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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.

In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?

A Lewis

B Grashoff

C Sherwood

D None of these

Review Detailed Answer

Correct Answer: Lewis

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be__________________?

A Cooled

B Humidified

C Both A. & B.

D Dehumidified

Review Detailed Answer

Correct Answer: Humidified

Mass transfer co-efficient is defined as__________________?

A Flux = Co-efficient/concentration difference

B Co-efficient = Flux/concentration difference

C Flux=concentration difference/coefficient

D None of these

Review Detailed Answer

Correct Answer: Co-efficient = Flux/concentration difference

Large quantity of silica gel is normally dried in a _________________ dryer?

A Freeze

B Through circulation

C Rotary vacuum

D Tray

Review Detailed Answer

Correct Answer: Through circulation

The value of „L/mG’ ratio for economical absorption operation ranges from _____________________?

A 0.5 to 0.8

B 0.8 to 1.2

C 1.25 to 2.0

D 2.5 to 3.5

Review Detailed Answer

Correct Answer: 1.25 to 2.0

In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raffinate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) ?

A 6.89

B 8.89

C 10

D 8.25

Review Detailed Answer

Correct Answer: 8.89

Dried finished product sampled from various parts of a ________________ dryer exhibits nonuniformity in the moisture content?

A Rotary

B Tray

C Freeze

D None of these

Review Detailed Answer

Correct Answer: Tray

In steam distillation, the _____________________?

A Temperature is 100°C

B Temperature is more than 100° C

C Product must be immiscible with water

D Temperature is higher than the boiling point of either component

Review Detailed Answer

Correct Answer: Product must be immiscible with water

A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?

A Spray dryer

B Drum dryer

C Rotary dryer

D Dielectric dryer

Review Detailed Answer

Correct Answer: Spray dryer

Which of the following parameters remains constant during chemical dehumidification ?

A Dry bulb temperature

B Partial pressure of vapour

C Wet bulb temperature

D None of these

Review Detailed Answer

Correct Answer: Dry bulb temperature

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the ______________ number ?

Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be__________________?

Mass transfer co-efficient is defined as__________________?

Large quantity of silica gel is normally dried in a _________________ dryer?

The value of „L/mG’ ratio for economical absorption operation ranges from _____________________?

Dried finished product sampled from various parts of a ________________ dryer exhibits nonuniformity in the moisture content?

In steam distillation, the _____________________?

A slurry is to be dried to produce flaky solid. Which dryer would you recommend ?

Which of the following parameters remains constant during chemical dehumidification ?