chemical engineering materials and construction MCQs – Page 19

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering materials and construction Mcqs
361. Which is the purest form of iron ?
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A. Pig iron

B. Wrought iron

C. Grey iron

D. Bessemer iron

362. Reduction in the grain size reduces the _______________ of the material?
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A. Tensile strength

B. Creep resistance

C. All A., B. & C.

D. Fatigue resistance

363. Trough of an apron conveyor is made of___________________?
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A. Either B. or C.

B. Metal

C. Lead lined concrete vessel

D. Wood

364. The ability of a material to offer resistance to scratching or indentation is a measure of its_________________?
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A. Resilience

B. Toughness

C. Brittleness

D. Hardness
365. Which of the following is produced by condensation polymerisation ?
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A. Bakelite

B. Poly vinyl chloride

C. Polystyrene

D. Polythene

366. Amount of energy that a material can absorb before its fracture is a measure of its _________________?
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A. Toughness

B. Ductility

C. Resilience

D. Malleability

367. Cast iron vessels are not suitable for the storage of_________________?
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A. Wet SO2

B. H2SO4 (fuming)

C. H2SO4 (95%) at room temperature

D. Freon

368. For storing water and acid free benzol, use a ______________ vessel?
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A. Karbate

B. Steel

C. None of these

D. Stainless steel

369. The specific gravity of coal depends mainly on its ______________ content?
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A. Carbon

B. Volatile matter

C. Moisture

D. Ash
370. The process of coating steel sheets by zinc to improve its corrosion resistance is called___________________?
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A. Calorising

B. Zincification

C. Galvanising

D. Tempering

371. Maximum carbon content in cast iron is ______________ percent?
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A. 3.8

B. 4.3

C. 5.2

D. 4.8

372. Silicon percentage in iron castings to have maximum hardness should be about__________________?
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A. 0.5

B. 0.8

C. 0.3

D. 2.5

373. Carbon content in steel is ___________________ percent?
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A. 6-Apr

B. 0.001-0.01

C. 0.1-2

D. 4-Feb

374. Nitriding of steel is a process for________________?
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A. Normalising

B. Case hardening

C. Annealing

D. Spheroidising

375. Hydrochloric acid is stored in a ________________vessel?
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A. Rubber lined steel

B. Lead lined steel

C. Cast iron

D. Stainless steel

376. Inconel is an alloy of_________________?
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A. Iron, nickel and chromium

B. Tin, zinc and nickel

C. Copper and nickel

D. Copper and tin

377. Presence of manganese in alloy steel improves its___________________?
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A. Corrosion resistance

B. Abrasion resistance & toughness

C. Cutting ability

D. Elasticity & creep resistance

378. High speed cutting tool steels contain about _______________ percent of tungsten?
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A. 50-55

B. 18-20

C. 30-35

D. 8-Jun

379. _____________ moulding process cannot be used for thermoplastic plastics?
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A. Compression

B. None of these

C. Extrusion

D. Injection
380. Wrought iron is a suitable material of construction for handling _____________ solutions?
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A. Alkalis & alkaline

B. None of these

C. Dilute acidic

D. Concentrated acidic