chemical engineering MCQs – Page 343

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs
6841. Maximum carbon content in cast iron is ______________ percent?
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A. 5.2

B. 4.3

C. 3.8

D. 4.8

6842. In case of Venturimeter, friction losses are about _____________ percent of maximum velocity head?
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A. 12

B. 2

C. 8

D. 20

6843. Combination of metals and ceramics are called___________________?
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A. Metalloy

B. Non-crystalline ceramics

C. Cermets

D. Pellets

6844. Condenser tubes are not made of_________________?
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A. Aluminium brass alloy

B. Muntz brass

C. Cartridge brass

D. Wood metal
6845. Wrought iron is a suitable material of construction for handling _____________ solutions?
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A. None of these

B. Alkalis & alkaline

C. Concentrated acidic

D. Dilute acidic

6846. Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the ____________ head?
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A. Manometric

B. Total

C. Friction

D. Static

6847. High speed steel should have high___________________?
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A. Toughness

B. Wear resistance

C. Hardenability

D. Both B. & C.
6848. Bell metal is an alloy of __________________?
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A. Zinc & tin

B. Copper & nickel

C. Copper & tin

D. Copper & zinc

6849. The simple Pitot tube does not measure the________________?
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A. Static pressure

B. All A., B. and C.

C. Dynamic pressure

D. Velocity at the stagnation point

6850. For a reciprocating pump, the indicator diagram is the graph between the________________?
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A. Discharge and overall efficiency

B. None of these

C. Angle swept by the crank pin at any instant and the discharge

D. Volume swept by piston for one complete revolution and the pressure in the cylinder
6851. Working of a _______________ pump characterises mixed flow?
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A. Piston

B. Diaphragm

C. None of these

D. Turbine
6852. Duriron is__________________?
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A. Acid resistant, brittle and very hard

B. ansion

C. Prone to breakage due to thermal expansion because of its very high co-efficient of thermal

D. All A., B. and C.

E. High silicon iron

6853. Bernoullis equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoullis equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?
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A. B, D, E

B. A, B, E

C. A, C, D

D. A, D, E

6854. _____________ iron is produced, when molten pig iron is chilled suddenly?
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A. Wrought

B. White cast

C. None of these

D. Grey cast

6855. The friction factor is___________________?
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A. None of these

B. Always inversely proportional to the Reynolds number

C. Not dimensionless

D. Not dependent on the roughness of the pipe

6856. Post weld heat treatment is done by____________________?
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A. Tempering

B. Normalising

C. Solution annealing

D. Stress relieving
6857. Which of the following crystal structures characterises the ferritic stainless stee l?
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A. None of these

B. Face centred cubic

C. Simple hexagonal

D. Body centred cubic
6858. Buckingham-? theorem states that in any physical problem including n quantities having m dimensions, the quantities can be arranged into _____________ independent dimensionless parameters?
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A. m

B. n/m

C. n

D. n-m
6859. Drag co-efficient in hindered settling is _____________ that in free settling?
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A. Less than

B. Not necessarily greater than

C. Always greater than

D. Equal to

6860. For an ideal fluid flow, Reynolds number is___________________?
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A. 0

B. 100

C. 2100

D. ?