chemical engineering materials and construction MCQs – Page 15

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 Review each marked answer and report any item that may be outdated or unclear.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
281. Mild steel is ___________________?
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A. A low carbon steel (0.05 to 0.3% carbon)

B. Very poor in strength & ductility

C. Highly resistant to corrosion (as much as stainless steel)

D. A high carbon steel (0.5 to 1.5% carbon)

282. The softest material in Mhos scale (for measuring hardness) is________________?
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A. None of these

B. Rubber

C. Gypsum

D. Talc
283. Plate and frame filter press is usually made of__________________?
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A. Stainless steel

B. Cast iron

C. Mild steel

D. Galvanised iron

284. Rubber lined pumps can be used to pump_________________?
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A. Chlorinated brine

B. Hypochlorous acid

C. Caustic soda

D. All A., B. and C.
285. Softness of silver can be converted into hardness by alloying it with small quantity of_________________?
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A. Zinc

B. Aluminium

C. Tin

D. Copper & nickel
286. Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property ?
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A. None of these

B. Phosphorus

C. Silicon

D. Sulphur

287. Constituents of stellite are__________________?
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A. Nickel, cobalt and vanadium

B. Zinc, aluminium and nickel

C. Zinc, copper and nickel

D. Cobalt, chromium and tungsten
288. Nickel is a constituent of ________________________?
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A. Duralumin

B. Monel metal

C. Bronze

D. Solder

289. Invar contains the highest percentage of___________________?
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A. Tungsten

B. Cobalt

C. Iron

D. Vanadium

290. Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?
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A. Tungsten

B. Nickel

C. Chromium

D. Cobalt
291. The metals occuring at the lower most position in the electromotive series____________________?
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A. Do not resist corrosion

B. Are heat insulators

C. Resist corrosion very strongly

D. Are very brittle

292. In order to be called steel, an alloy should have iron percentage greater than____________________?
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A. 70

B. 80

C. 90

D. 50

293. Most common stainless steel type 316, which is highly resistant to corrosion contains______________?
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A. 2-4% Cr, 22% NI and 2-4% Mo

B. 16-13% Cr 10-14% Ni and 2-3% Mo

C. 20-22% Cr, and 8-10% Ni

D. None of these

294. Brine (15% concentration) can be stored in a vessel made of____________________?
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A. Cast iron

B. Karbate

C. Monel

D. None of these

295. _____________ iron is produced, when molten pig iron is chilled suddenly?
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A. None of these

B. Wrought

C. White cast

D. Grey cast

296. Semi steel is__________________?
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A. Produced by adding 10-20% steel to the cupola charge

B. Stronger than cast iron

C. Both A. and B.

D. Neither A. nor B.

297. Which of the following metals in not used for coating of the base metal to guard it against corrosion ?
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A. Magnesium

B. Aluminium

C. Cadmium

D. Lead

298. Mild steel is a/an _____________ steel?
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A. Medium carbon

B. Low carbon

C. High carbon

D. High alloy

299. Mercury is transported in metal containers made of________________?
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A. Aluminium

B. Iron

C. Lead

D. Nickel

300. Which of the following has the least value of ultimate tensile strength (UTS) ?
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A. Medium carbon steel

B. Cast iron

C. Wrought iron

D. High carbon steel