chemical engineering materials and construction MCQs – Page 22

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 Review each marked answer and report any item that may be outdated or unclear.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

421. With increase in the carbon percentage in the steel, its__________________?
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A. Ductility reduces

B. All A., B. and C.

C. Tensile strength increases

D. Hardness increases

422. Liners of a ball mill are never made of__________________?
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A. Rubber or ceramic material

B. Alloy steel

C. Cast iron

D. Lead

423. A measure of toughness of a material is its________________?
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A. Area under stress-strain diagram

B. Ultimate strength

C. Percentage elongation

D. Yield strength

424. Glass is corroded by________________?
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A. Phosphoric acid

B. None of these

C. Fluorine (dry or wet)

D. Sulphuric acid

425. Which of the following is the most widely used insulating material for steam carrying pipelines ?
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A. Glass wool and 85% magnesia

B. Ceramic fibre blanket

C. Slag wool

D. Vermiculite

426. For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is__________________?
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A. Nickel

B. Aluminium

C. Stainless steel

D. Cast iron

427. Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________?
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A. Low thermal conductivity

B. All A., B. and C.

C. High corrosion resistance

D. High co-efficient of thermal expansion

428. Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________?
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A. Elastic limit

B. Ultimate tensile strength (U.T.S.)

C. None of these

D. Endurance limit

429. Cast iron is__________________?
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A. Manufactured in cupola and is brittle

B. Used for making shock resisting parts

C. All A., B. & C.

D. Having compressive strength more than its tensile strength

430. Tin coating on metals is not done by_____________________?
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A. Hot dipping

B. Powder metallurgy

C. Electro-deposition

D. Spraying

431. The main constituent of carborundum is ___________________ carbide?
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A. Aluminium

B. Calcium

C. Silicon

D. Boron

432. _____________________ is used for determining the tensile strength of steels ?
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A. None of these

B. Mechanical press

C. Universal testing machine

D. Hydraulic press

433. Which of the following has a very high carbide forming tendency in steels ?
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A. Vanadium

B. Nickel

C. Chromium

D. Silicon

434. Metal at the top of the electromotive series is________________?
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A. Most stable

B. Most noble

C. Least active

D. Most active

435. Which of the following undergoes granular fracture ?
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A. None of these

B. Cast iron

C. Steel

D. Wrought iron

436. Mild steel is a/an ______________ steel?
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A. Medium carbon

B. High alloy

C. High carbon

D. Low carbon

437. Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about_______________?
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A. Half

B. One third

C. One fifth

D. One twelfth

438. Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of__________________?
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A. Cast iron

B. Wrought iron

C. Stainless steel or glass lined vessel

D. Karbate

439. Alinco, which is a aluminium-cobalt-nickel steel, is used for making __________________?
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A. Powerful magnets

B. Chemical equipments

C. Boiler tubes

D. Surgical instruments

440. Duriron is__________________?
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A. Prone to breakage due to thermal expansion because of its very high co-efficient of thermal

B. High silicon iron

C. ansion

D. Acid resistant, brittle and very hard

E. All A., B. and C.

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