chemical engineering MCQs – Page 363

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs

7241. Most common stainless steel type 316, which is highly resistant to corrosion contains______________?
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A. 16-13% Cr 10-14% Ni and 2-3% Mo

B. 2-4% Cr, 22% NI and 2-4% Mo

C. None of these

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

7242. Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?
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A. Are prone to temper brittleness

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

C. Have very poor fatigue resistance

D. Do not contain nickel or chromium or both

7243. Thermosetting polymers are_________________?
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A. Injection moulded

B. Extruded

C. Cast molded

D. None of these

7244. Which of the following contains maximum percentage of carbon ?
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A. Railway spring steel

B. Boiler plate steel

C. Rail steel

D. Saws for cutting steel

7245. German silver in an alloy of________________?
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A. Copper, aluminium and silver

B. Copper, nickel and zinc

C. Silver, nickel and zinc

D. Silver, zinc and aluminium

7246. Which of the following is not shipped in mild steel containers ?
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A. Ammonia

B. Acetone

C. Formic acid

D. Ethyl alcohol

7247. Ceramic materials are____________________?
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A. Always bad heat conductors

B. Always amorphous in nature

C. Stronger in compression than in tension

D. Organic in nature

7248. Cermets are used for making___________________?
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A. Cutting tools

B. Abrasives

C. Both A. & B.

D. Neither A. nor B

7249. Sulphuric acid pickling tanks are lined with__________________?
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A. Aluminium

B. Rubber

C. Nickel

D. Glass

7250. Cast iron vessels are not suitable for the storage of_________________?
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A. Wet SO2

B. Freon

C. H2SO4 (fuming)

D. H2SO4 (95%) at room temperature

7251. Carbon is present in the uncombined (graphitic) form in case of__________________?
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A. Ferroalloy

B. Cast iron

C. None of these

D. Steel

7252. Cast iron and steel pipes are produced by ____________ casting?
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A. Slush

B. Die

C. True centrifugal

D. Investment

7253. Pick out the wrong statement?
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A. Metal/alloys having hexagonal crystal lattice structure are less malleable than those having

B. ic crystal lattice structure

C. Metal/alloys having body centred cubic (bcc) crystal lattice structure is stronger & less ductile

D. n those having face centred cubic (fcc) crystal lattice structure

E. Tungsten has a body centred cubic (bcc) crystal lattice structure

F. Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure

7254. Which has the maximum melting point out of the following ?
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A. Stainless steel

B. Steel

C. Wrought iron

D. Cast iron

7255. The ability of a material to absorb energy in the elastic range is a measure of its __________________?
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A. Brittleness

B. Resilience

C. Malleability

D. Toughness

7256. Hammers and railway rails are normally made of___________________?
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A. Mild steel

B. Dead mild steel

C. Medium carbon steel

D. High carbon steel

7257. Carbon tetrachloride can be stored in a storage vessel made of________________?
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A. All A., B. and C.

B. Tin

C. High silicon iron (14% Si)

D. Stainless steel

7258. Graphite is corroded by_________________?
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A. None of these

B. Hydrochloric acid

C. Sulphuric acid (10%)

D. Sea water

7259. Which of the following has the highest density and the lowest melting point ?
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A. Titanium

B. Stainless steel

C. Aluminium

D. Lead

7260. Carbon content in plain carbon steel is ______________ percent?
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A. 0.65 to 0.80

B. 0.35 to 0.45

C. 0.1 to 0.15

D. 0.85 to 1.2

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