chemical engineering materials and construction MCQs – Page 14

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 Review each marked answer and report any item that may be outdated or unclear.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
261. Which of the following is an alloy of nickel and copper ?
comments icon0

A. Inconel

B. Hastelloy

C. Monel

D. Duriron

262. Slow and progressive deformation of a material with time under constant stress is called___________________?
comments icon0

A. Erosion

B. Creep

C. Resilience

D. None of these

263. Corrosion resistance of steel is increased by the addition of_________________?
comments icon0

A. Lead and vanadium

B. Nickel and chromium

C. Molybdenum and tungsten

D. Phosphorous and tungsten

264. Fermenter used in the production of penicillin by deep fermentation process is a ______________ lined steel vessel ?
comments icon0

A. Monel

B. Rubber

C. Glass

D. Nickel

265. Invar used in thermocouples is an alloy of nickel and________________?
comments icon0
A. Iron

B. Lead

C. Chromium

D. Copper

266. Which of the following has the poorest weldability ?
comments icon0
A. High-carbon steel

B. Low carbon steel

C. Mild steel

D. Wrought iron

267. Nickel (76%) and chromium (15%) alloys are termed as______________________?
comments icon0

A. Monel

B. Aluminium bronzes

C. Brass

D. Inconel
268. Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?
comments icon0

A. Low temperature strength properties

B. High strength and corrosion & oxidation-resistance at elevated temperature

C. High strength to weight ratio

D. Its ability to be cast, rolled, forged & stamped

269. Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and_________________?
comments icon0

A. Moving mercury and graphite

B. Graphite and moving mercury

C. Moving mercury and crimped steel wire

D. Moving mercury and carbon

270. Hammers and railway rails are normally made of___________________?
comments icon0
A. High carbon steel

B. Mild steel

C. Dead mild steel

D. Medium carbon steel

271. ______________ is not a case hardening process?
comments icon0

A. Carburising

B. Nitriding

C. Annealing

D. Cyaniding

272. Urea autoclave is made of_________________?
comments icon0
A. Stainless steel

B. Cast iron

C. Refractory blocks

D. Lead lined steel

273. Low carbon steels are those in which carbon percentage is around____________________?
comments icon0
A. 0.1 to 0.35

B. 0.8 to 1.5

C. 1.5 to 2

D. 0.4 to 0.7

274. Cementite is________________?
comments icon0

A. A compound of carbon and iron

B. All A., B. and C.

C. Fe3C chemically

D. Characterised by an orthorhombic crystal structure

275. Zinc is highly ______________ at room temperature?
comments icon0

A. Ductile

B. Resistant to atmospheric corrosion

C. Brittle

D. Malleable

276. All materials obey Hookes law within elastic limit. When elastic limit is reached, the tensile strain__________________?
comments icon0

A. Increases in proportion to stress

B. Decreases very quickly

C. Increases very quickly

D. Decreases in proportion to stress

277. Perspex is nothing but_____________________?
comments icon0

A. An elastomer

B. Acrylic sheet

C. Aluminium foil clad with Bakelite

D. An alloy of lead and tin

278. Generally _____________ are subjected to galvanising (i.e., zinc coating)?
comments icon0

A. Non-metals

B. Non-ferrous metals

C. Stainless steel

D. Low carbon steels
279. Cast iron and steel pipes are produced by ____________ casting?
comments icon0

A. Slush

B. Die

C. Investment

D. True centrifugal
280. Plasticisers are added to polymers to improve their____________________?
comments icon0

A. Tensile strength

B. Softness & flexibility

C. Alkali resistance

D. Acid resistance