Materials and Construction MCQs

479 MCQs  — Chemical Engineering MCQs  (Page 31 of 48)

Attempt Materials and Construction Quiz
Slow and progressive deformation of a material with time under constant stress is called___________________?
A. Creep
B. Erosion
C. Resilience
D. None of these
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Hammers and railway rails are normally made of___________________?
A. Mild steel
B. Dead mild steel
C. Medium carbon steel
D. High carbon steel
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_____________ is added in stainless steel to prevent inter crystal corrosion?
A. Vanadium
B. Niobium
C. Chromium
D. Nickel
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Cermets are used for making___________________?
A. Cutting tools
B. Abrasives
C. Both a. & b.
D. Neither a. nor b
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German silver used for decorative purposes contains maximum percentage of___________________?
A. Silver
B. Copper
C. Zinc
D. Nickel
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White metal is an alloy of___________________?
A. Lead, tin and cadmium
B. Copper, tin and zinc
C. Copper and lead
D. None of these
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Pure nickel is___________________?
A. Ferromagnetic above its curie point (i.e., 415°c)
B. Having h.c.p. crystal lattice
C. Ferromagnetic at room temperature
D. Not resistant to oxidation at high temperature
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Heavy duty bearings are usually made of___________________?
A. White metal
B. Phosphorous bronze
C. Monel
D. Zinc
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Which of the following alloy steels is the most suitable for making gun barrels and projectiles ?
A. Tungsten steel
B. Molybdenum steel
C. Nickel-chrome steel
D. Cobalt steel
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Specify the material of construction suitable for handling concentrated HNO3 at 100°C ?
A. High silicon iron, kel-f and teflon
B. Tin and wood
C. Silicone rubber
D. Stainless steel
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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