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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.

Agitated film evaporator is suitable for concentrating _____________ liquids?

A Foaming

B Viscous

C Very thin

D Corrosive

Review Detailed Answer

Correct Answer: Viscous

Kirchoff’s law is applicable to________________?

A Monochromatic radiation only

B Total radiation only

C Both A. and B.

D Only volumes and not to surfaces

Review Detailed Answer

Correct Answer: Both A. and B.

The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0.023 (K/D) (Re)0.8 (Pr)0.4] cannot be used for________________?

A Low Reynold’s number

B Very low Grashoff number

C Molten metals

D All A., B. and C.

Review Detailed Answer

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

The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m2. The flux, when the element temperature is increased to 1000°C for the same furnace temperature is_____________________?

A 11.2 kW/m2

B 12.0 kW/m2

C 14.6 kW/m2

D 16.5 kW/m2

Review Detailed Answer

Correct Answer: 16.5 kW/m2

A composite flat wall of a furnace is made of two materials ‘A’ and ‘B’. The thermal conductivity of ‘A’ is twice of that of material ‘B’, while the thickness of layer of ‘A’ is half that of B. If the temperature at the two sides of the wall are 400 and 1200°K, then the temperature drop (in °K) across the layer of material ‘A’ is________________?

A 125

B 133

C 150

D 160

Review Detailed Answer

Correct Answer: 160

In forced convection, the heat transfer depends on _______________?

A Re, Pr

B Re, Gr

C Mainly Gr

D Re only

Review Detailed Answer

Correct Answer: Re, Pr

Kg of liquid evaporated per hour in an evaporator is defined as its_________________?

A Capacity

B Economy

C Steam load

D None of these

Review Detailed Answer

Correct Answer: Capacity

In SI units, fouling factor is expressed in __________________?

A m2°K/W

B W/m2°K

C m2°K

D m°K/W

Review Detailed Answer

Correct Answer: m2°K/W

Radiation heat losses from satisfactorily insulated high pressure boiler may be about _____________ percent?

A 1

B 7

C 18

D 26

Review Detailed Answer

Correct Answer: 7

In the free convection regime of pool boiling, the heat flux is proportional to__________________?

A Δt1/2

B Δt2

C Δt5/4

D Δt

Review Detailed Answer

Correct Answer: Δt5/4

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Agitated film evaporator is suitable for concentrating _____________ liquids?

Kirchoff’s law is applicable to________________?

The Dittus-Boelter equation for convective heat transfer [(i.e. h = 0.023 (K/D) (Re)0.8 (Pr)0.4] cannot be used for________________?

The radiation heat flux from a heating element at a temperature of 800°C, in a furnace maintained at 300°C is 8 kW/m2. The flux, when the element temperature is increased to 1000°C for the same furnace temperature is_____________________?

In forced convection, the heat transfer depends on _______________?

Kg of liquid evaporated per hour in an evaporator is defined as its_________________?

In SI units, fouling factor is expressed in __________________?

Radiation heat losses from satisfactorily insulated high pressure boiler may be about _____________ percent?

In the free convection regime of pool boiling, the heat flux is proportional to__________________?