chemical engineering materials and construction MCQs – Page 11

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 Review each marked answer and report any item that may be outdated or unclear.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
201. Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?
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A. Have very poor fatigue resistance

B. Do not contain nickel or chromium or both

C. Are used for automobile parts like gears, axle, shaft, bearings etc.

D. Are prone to temper brittleness

202. An alloy of iron containing 4% carbon is called________________?
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A. Mild steel

B. Wrought iron

C. None of these

D. High carbon steel

203. For spinning viscose rayon, the extrusion spinnerettes are made of ___________________?
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A. High carbon steel

B. Aluminium

C. Platinum or gold alloys

D. Nickel

204. Addition of 2% nickel in steel makes it suitable for making ___________________?
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A. Connecting rod

B. Turbine blades

C. Electronic valves

D. Boiler plates, rivets etc.
205. The process of heating the cold pressed metallic powder is called ______________ in powder metallurgy?
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A. Fusion

B. Sintering

C. Precipitation

D. Agglomeration

206. The hardest material just prior to diamond in Mhos scale is___________________?
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A. Carborundum

B. Topaz

C. Corundum

D. Calcite

207. Cast iron has____________________?
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A. Its elastic limit very close to ultimate breaking strength

B. High malleability

C. High ductility

D. Very high tensile strength

208. The heat treatment process applied to cold formed steel parts is ____________________?
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A. Tempering

B. Artificial ageing

C. Solution annealing

D. Normalising

209. High degree of toughness is a must for__________________?
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A. None of these

B. Shock resisting steel

C. High speed steel

D. Cold work tool steel

210. Carbon percentage is the same in cast iron and_________________?
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A. Pig iron

B. High silicon (14%) iron

C. Mild steel

D. Wrought iron

211. Cermets are used for making___________________?
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A. Cutting tools

B. Abrasives

C. Both A. & B.

D. Neither A. nor B

212. Cold worked steel parts are normally subjected to_________________?
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A. Annealing

B. Shot peening

C. Normalising

D. Hardening

213. Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of_________________?
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A. Brass

B. High carbon steel

C. Copper

D. Aluminium

214. Nickel (56%) and molybdenum (17%) alloys are called________________?
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A. Inconel

B. Monel

C. Hastelloy C

D. Bronzes

215. Which of the following is a light alloy ?
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A. Babbitt metal

B. Monel metal

C. Dow metal

D. German silver

216. Coke oven regenerators are made of ______________ bricks?
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A. Fire clay

B. High electrical conductivity

C. Low thermal conductivity

D. Silica

217. Zinc is not used__________________?
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A. In its oxide form as pigments

B. As anode for corrosion prevention in boiler

C. For producing zinc base die casting alloys

D. As an alloying element in various bronzes
218. Which of the following stainless steels is non-magnetic ?
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A. Martenistic

B. Ferritic

C. None of these

D. Austenitic
219. The impure iron (pig iron) that is tapped out from blast furnace contains about _____________ percent carbon?
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A. 8

B. 0.2

C. 2

D. 4
220. To improve the machinability of steel, it is generally subjected to_______________?
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A. Normalising

B. Tempering

C. Spheroidising

D. Annealing