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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.

Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

A Prandtl

B Reynolds

C Both A. & B.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Reynolds

The separation of liquid droplets from the vapor is done by a/an _____________ in the evaporators?

A Steam ejector

B Entrainment separator

C Compressor

D Vacuum pump

Review Detailed Answer

Correct Answer: Entrainment separator

For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is_________________?

A 3

B 0.33

C 1

D 1.33

Review Detailed Answer

Correct Answer: 1

In forced circulation, the heating element is injected_________________?

A Internally

B Externally

C Both A. and A.

D Neither A. nor B.

Review Detailed Answer

Correct Answer: Internally

According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor) ?

A 2f

B f

C f/2

D f/4

Review Detailed Answer

Correct Answer: f

The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?

A αT

B α × 1/T

C α T4

D Independent of T

Review Detailed Answer

Correct Answer: α × 1/T

The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is ______________ compared to the same size pipes without fins?

A More

B Less

C Same

D Unpredictable

Review Detailed Answer

Correct Answer: Less

A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because__________________?

A Total heat transfer area of all the effects is -less than that in a single effect evaporator system

B Total amount of vapor produced per Kg of feed steam in a multiple effect system is much

C Boiling point elevation in a single effect system is much higher than that in any effect in a

D Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect

Review Detailed Answer

Correct Answer: Total amount of vapor produced per Kg of feed steam in a multiple effect system is much

In a 1-1 concurrent heat exchanger, if the tube side fluid outlet temperature is equal to the shell side fluid outlet temperature, then the LMTD is_________________?

A ∞

B 0

C Equal to the difference between hot and cold fluids inlet temperature

D Equal to the difference between hot fluid inlet temperature and cold fluid outlet temperature

Review Detailed Answer

Correct Answer: 0

Grashoff number, which is defined as g . β (Ts – T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to ____________ force?

A Viscous

B Elastic

C Inertial

D None of these

Review Detailed Answer

Correct Answer: Viscous

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

Nusselt number (for forced convection heat transfer) is a function of the _____________ number?

The separation of liquid droplets from the vapor is done by a/an _____________ in the evaporators?

For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is_________________?

In forced circulation, the heating element is injected_________________?

According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor) ?

The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?

The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is ______________ compared to the same size pipes without fins?

A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because__________________?

In a 1-1 concurrent heat exchanger, if the tube side fluid outlet temperature is equal to the shell side fluid outlet temperature, then the LMTD is_________________?

Grashoff number, which is defined as g . β (Ts – T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to ____________ force?