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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.

Check in a centrifugal pump is________________?

A Provided in the discharge line

B Generally a globe valve

C Provided to prevent liquid from backing up through the pump when the pump is turned off or

D All A., B. and C.

Review Detailed Answer

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

For pipe flows, head is proportional to __________ at constant capacity(where, D = pipe diameter) ?

A 1/D

B 1/D2

C 1/D5

D D2

Review Detailed Answer

Correct Answer: 1/D

A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be__________________?

A 100

B 200

C 320

D 160

Review Detailed Answer

Correct Answer: 200

Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?

A Velocity and relative roughness

B Head loss and velocity

C Reynold number, relative roughness and head loss

D Reynolds number and friction factor

Review Detailed Answer

Correct Answer: Reynold number, relative roughness and head loss

The pressure head of a flow meter remains constant for_________________?

A Venturimeter

B Orificemeter

C Rotameter

D Pitot tube

Review Detailed Answer

Correct Answer: Rotameter

Pick out the Hagen-Poiseuille‟s equation ?

A Δp/ρ = 4f (L/D) (V2/2gc)

B Δp = 32 (μLV/gc. D2)

C Δp/L = 150 [(1 – ε)/ε3]. (μ.V0

D Δp/L = 1.75 [(1 – ε)/ε3]. (ρV0

Review Detailed Answer

Correct Answer: Δp = 32 (μLV/gc. D2)

A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is__________________?

A 20 m/sec

B 10 m/sec

C 5 √2 m/sec

D 5 m/sec

Review Detailed Answer

Correct Answer: 10 m/sec

Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena-contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity)?

A Cd = Cc/Cv

B Cd = Cc.Cv

C Cd = Cv/ Cc

D None of these

Review Detailed Answer

Correct Answer: Cd = Cc.Cv

A fluid whose apparent viscosity increases with shear rate is termed as the _____________ fluid?

A Newtonian

B Viscous

C Dilatant

D Non-viscous

Review Detailed Answer

Correct Answer: Dilatant

In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the _____________ efficiency?

A Manometric

B Mechanical

C Volumetric

D Overall

Review Detailed Answer

Correct Answer: Manometric

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

Check in a centrifugal pump is________________?

For pipe flows, head is proportional to __________ at constant capacity(where, D = pipe diameter) ?

A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be__________________?

Which of the following quantities are computed by using the hydraulic radius for noncircular ducts ?

The pressure head of a flow meter remains constant for_________________?

Pick out the Hagen-Poiseuille‟s equation ?

A pipe of I.D. 4 m is bifurcated into two pipes of I.D. 2 m each. If the average velocity of water flowing through the main pipe is 5 m/sec, the average velocity through the bifurcated pipes is__________________?

Cd, Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena-contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity)?

A fluid whose apparent viscosity increases with shear rate is termed as the _____________ fluid?

In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the _____________ efficiency?