Materials and Construction MCQs

479 MCQs  — Chemical Engineering MCQs  (Page 38 of 48)

Attempt Materials and Construction Quiz
A material no longer behaves elastically beyond_________________?
A. Plastic limit
B. Limiting load
C. Elastic limit
D. Breaking load
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Pick the odd man out of the following?
A. Calorising
B. Pack carburising
C. Nitriding
D. Cyaniding
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Thermosetting resins are those polymers, which__________________?
A. Do not increase in plasticity with rise in temperature
B. Allow slip to occur between molecules
C. Do not take on a permanent set
D. None of these
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Babbitt metal used for making bearings should have_____________________?
A. High co-efficient of friction between journal and bearing
B. Ability to retain lubricant on its surface
C. Low co-efficient of friction between journal and bearing
D. Both b. & c.
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Chromel (Nichrome) is an alloy of_____________________?
A. Chromium and molybdenum
B. Nickel and chromium
C. Molybdenum and nickel
D. Chromium and aluminium
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Austenitic manganese steel used for making jaws of crushing machines contains about ______________ percent manganese?
A. 1.5-2
B. 3.5-4.5
C. 7-9
D. 12-14
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Ability of a material to absorb energy in deformation in the plastic range is characterised as its____________________?
A. Ductility
B. Toughness
C. Creep
D. Resilience
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The metals occuring at the lower most position in the electromotive series____________________?
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
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Purity of electrical grade aluminium should be ≥ _____________ percent?
A. 95
B. 99.5
C. 85
D. 90
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Which of the following has the highest compressive strength ?
A. Wrought iron
B. Cast iron
C. Mild steel
D. High carbon 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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