chemical engineering chemical engineering basics MCQs – Page 32

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical engineering basics Mcqs

621. Ganister contains maximum percentage of_________________?
0

A. MgO

B. MnO2

C. SiO2

D. FeO

622. In case of compression of one kg of air, the work done will be the least, when the value of polytropic index n is______________________?
0

A. 1

B. Y = Cp/Cv

C. 1.5

D. 1.4

623. More than 95% of _______________ is present in corundum ?
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A. CaSiO2

B. SiO2

C. Al2O3

D. MgO

624. Holes for riveting purposes should be preferably made by________________?
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A. None of these

B. Drilling

C. Punching

D. Cutting torch

625. Function of fusible plug in a boiler is to ______________________?
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A. Put off fire in the furnace when water level in the boiler falls to unsafe limit

B. Drain out water and sludge from the boiler during repair

C. All A, B. & C

D. Guard the boiler in case of abnormal rise in steam pressure

626. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?
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A. Hydrazine addition during feed water treatment

B. Water alkalinity & leakage

C. Release of non-condensable gas from water in the boiler

D. Scale formation

627. Adhesives__________________?
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A. Cant be used in the form of pressure sensitive tapes

B. None of these

C. Cant join two dissimilar metals

D. Cure instantaneously after application on a surface

628. _________________ property of a material is determined by the Herbert Pendulum device?
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A. Toughness

B. Tensile

C. Compressive

D. Hardness

629. Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?
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A. Concentration

B. Temperature

C. Velocity

D. None of these

630. Encyclopaedia of Chemical Technology has been ____________________?
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A. Edited by Kirk Othmer

B. Authored by Perry and Chilton

C. Edited by Perry and Chilton

D. Authored by Kirk Othmer

631. The co-ordination number in simple cubic structure is___________________?
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A. 12

B. 8

C. 4

D. 6

632. The bank of tubes located at the back of the domestic refrigerators are the _______________ tubes?
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A. Throttling

B. Condenser

C. Refrigerant cooling

D. Evaporator

633. Electrometallurgical methods of metal extraction is normally used for those metals___________________?
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A. All A, B. & C.

B. Whose oxide/ore is not reduced by carbon

C. Which fall in the category of alkali & alkaline earth metals

D. Which stands higher in the electrochemical series of the metal

634. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium_______________?
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A. Nitrate

B. Chloride

C. Carbonate

D. Sulphate

635. Which of the following fastening devices has its both ends threaded ?
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A. Stud

B. Bolt

C. Split nut

D. Set screw

636. The transition temperature for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
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A. Carbon

B. Manganese

C. Both A nor B

D. Neither A nor B

637. Cupola produces _________________ iron?
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A. Cast

B. Carbon free

C. Wrought

D. Pig

638. For dynamic strain measurement, the Wheatstone bridge used is of ______________ type ?
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A. Voltage sensitive null

B. None of these

C. Current sensitive deflected

D. Voltage sensitive deflected

639. In the acid Bessemer process, the hot metal should have the following composition ?
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A. S > 1.5% and P < 0.05%

B. S 1.5%

C. S < 0.05% and P < 0.05%

D. S < 0.05% and P < 1.5%

640. Sand used to stop the green sand from sticking to the pattern is termed as the ______________ sand?
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A. Parting

B. Loam

C. Synthetic

D. Dry

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