chemical engineering materials and construction MCQs – Page 25

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 Review each marked answer and report any item that may be outdated or unclear.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
481. German silver is an alloy of copper, nickel and________________?
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A. Silver

B. Tin

C. Lead

D. Zinc
482. When iron is rusted, it is__________________?
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A. Reduced

B. None of these

C. Converted to a fine powder

D. Oxidised
483. Anodic material used for the cathodic protection of underground buried steel pipeline is_________________?
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A. Nickel or copper

B. Bronze

C. Brass

D. Zinc or magnesium
484. Galvanising is generally done on___________________?
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A. Cast iron

B. Low carbon steel

C. Non-ferrous metals

D. Stainless steel

485. Which one has the maximum tensile strength out of the following ?
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A. White cast iron

B. Pig iron

C. Nodular cast iron

D. Grey cast iron

486. Age hardening is concerned with_________________?
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A. Duralumin

B. Silver

C. Brass

D. Copper

487. Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its__________________?
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A. Compressive strength

B. Corrosion resistance

C. Tensile strength

D. Machinability
488. Rotary kilns in cement industry are lined with _____________bricks?
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A. Silica

B. Lead

C. Fireclay

D. High alumina & high magnesia
489. Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?
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A. 0.2

B. 0.35

C. 0.02

D. 0.5

490. Presence of nitrogen in steel___________________?
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A. Increases its hardness

B. Increases its strength

C. Makes it brittle

D. Is desirable

491. Very high sulphur in pig iron makes ___________________?
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A. Its hard and machinable

B. Its casting unsound

C. Its brittle and malleable

D. All A., B. & C.

492. Cast iron detachable joint is used in __________ pipes.
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A. Cast iron

B. Reinforced cement concrete

C. Steel

D. Asbestos cement

493. Nickel base alloys with ______________ are known as monel metal?
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A. Copper

B. Molybdenum

C. Zinc

D. Tin

494. Age hardening of duralumin is due to____________________?
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A. Copper

B. Magnesium

C. Both A. & B.

D. Neither A. nor B.

495. Condenser tubes are not made of_________________?
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A. Cartridge brass

B. Aluminium brass alloy

C. Wood metal

D. Muntz brass

496. The material of construction of bearings is__________________?
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A. Steel

B. Pig iron

C. Cast iron

D. Babbitt metal
497. Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?
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A. Karbate

B. Steel

C. Nickel

D. Cast iron