chemical engineering materials and construction MCQs – Page 20

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 Review each marked answer and report any item that may be outdated or unclear.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
381. Copper is dissolved from its ore by H2SO4 in a percolation tank made of_________________?
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A. Wood

B. Reinforced concrete lined with lead

C. Stainless steel

D. High silicon iron (14% Si)

382. How many atoms are there per unit cell in a body centred cubic lattice system ?
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A. 2

B. 6

C. 3

D. 5

383. Aqueous nitric acid is stored in ______________ vessel?
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A. Stainless steel

B. Cast iron

C. Plain carbon steel

D. Thermosetting plastic material

384. High carbon steel contains more than _____________ percent carbon?
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A. 0.5

B. 2.8

C. 2.5

D. 2.2

385. Steel rods are used in reinforced concrete to increase its ______________ strength?
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A. Shear

B. Tensile

C. None of these

D. Compressive

386. Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with______________?
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A. Lead or acid proof bricks

B. Karbate

C. Rubber

D. Acidic refractory
387. Karbate is____________________?
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A. A mixture of iron dust and saw dust

B. Carbon impregnated with resin (usually Bakelite)

C. An acid resistant material

D. Both B. and C.
388. _______________ does not contain tin as an alloying material?
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A. Solder

B. Brass

C. Babbitt metal

D. Pewter

389. Among the tin containing alloys, ______________ consumes the maximum amount of tin?
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A. Bronzes

B. Pewter metal

C. Solder

D. White metal

390. Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of__________________?
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A. Aluminium

B. Stainless steel or glass lined steel

C. High silicon cast iron

D. Nickel clad steel

391. A material capable of undergoing large permanent deformation, when subjected to tension is termed as___________________?
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A. Friable

B. None of these

C. Ductile

D. Brittle

392. Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
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A. Acetic acid

B. Hydrochloric acid (concentrated)

C. Phosphoric acid (95%) & sulphuric acid (95%)

D. Benzoic & boric acids

393. Which of the following is the most prone to atmospheric corrosion ?
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A. Copper

B. Tin

C. Iron

D. Silver

394. Wrought iron is having very high ________________?
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A. Strength

B. Hardness

C. Susceptibility to changes in its properties by heat treatment

D. Corrosion resistance
395. Corrosion resisting properties of cast iron are significantly improved by the addition of 12 15% of___________________?
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A. Silicon

B. Vanadium

C. Tungsten

D. All A., B. & C.

396. Which of the following is a low melting point metal ?
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A. Copper

B. Tin

C. Wrought iron

D. Stainless steel

397. A hardness depth of about 3 mm can be achieved by induction hardness in ______________ seconds?
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A. 5

B. 500

C. 250

D. 100

398. Reactor used in the production of polyvinyl chloride (PVC) is made of____________________?
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A. Tantalum

B. Nickel or glass lined steel

C. Lead

D. Aluminium

399. Metalloid is__________________?
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A. Highly electronegative in nature

B. An element which exhibits the properties of both metal & non-metal

C. An alloy

D. All A., B. and C.

400. Cast iron is having very high ___________________?
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A. Proximity between its elastic limit and ultimate breaking strength

B. Ductility

C. All A., B. and C.

D. Tensile strength