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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.

Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by__________________?

A Eddies current

B Conduction

C Convection

D None of these

Review Detailed Answer

Correct Answer: Conduction

_____________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side?

A Single pass, fixed tube sheet

B U-tube

C Three pass, fixed tube sheet

D None of these

Review Detailed Answer

Correct Answer: U-tube

Evaporation of 1kg of water from a solution in a single effect evaporator requires about ________________ kg of steam?

A 0.4 – 0.6

B 1-1.3

C 1.8-2

D 2 – 2.4

Review Detailed Answer

Correct Answer: 1-1.3

Thermal conductivities of most of the liquids _______________ with rise in temperature?

A Increases

B Decreases

C Remains unchanged

D May increase or decrease; depends on the liquid

Review Detailed Answer

Correct Answer: Decreases

The purpose of providing a ‘catchall’ in the vapor line of an evaporator is to__________________?

A Create vacuum

B Regulate the vapor flow

C Vent the non-condensable gases

D Arrest the entrained liquid

Review Detailed Answer

Correct Answer: Arrest the entrained liquid

Removal of ______________ heat is involved in the condensation of a vapor under saturated conditions?

A Super

B Sensible

C Latent

D Both B. & C.

Review Detailed Answer

Correct Answer: Sensible

The energy radiated from a surface Q at absolute temperature T is related as__________________?

A Q ∝ T2

B Q ∝ T4

C Q ∝ T3

D None of these

Review Detailed Answer

Correct Answer: Q ∝ T4

Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

A Aluminium foil

B Refractory bricks

C Iron plate

D Coke breeze

Review Detailed Answer

Correct Answer: Coke breeze

Crystallisation of solids from a homogeneous solution is a/an ______________ process?

A Exothermic

B Mildly endothermic

C Highly endothermic

D None of these

Review Detailed Answer

Correct Answer: Exothermic

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?

A Hardness

B Dissolved solids content

C Suspended solids content

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by__________________?

_____________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side?

Evaporation of 1kg of water from a solution in a single effect evaporator requires about ________________ kg of steam?

Thermal conductivities of most of the liquids _______________ with rise in temperature?

The purpose of providing a ‘catchall’ in the vapor line of an evaporator is to__________________?

Removal of ______________ heat is involved in the condensation of a vapor under saturated conditions?

The energy radiated from a surface Q at absolute temperature T is related as__________________?

Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

Crystallisation of solids from a homogeneous solution is a/an ______________ process?

Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low___________________?