Materials and Construction MCQs

479 MCQs  — Chemical Engineering MCQs  (Page 16 of 48)

Attempt Materials and Construction Quiz
Which of the following undergoes granular fracture ?
A. Wrought iron
B. Steel
C. Cast iron
D. None of these
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Liners of a ball mill are never made of__________________?
A. Lead
B. Alloy steel
C. Rubber or ceramic material
D. Cast iron
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Teflon (PTFE) is corroded by_______________?
A. Hydrochloric acid (10%)
B. Hydrochloric acid (95%)
C. Sulphuric acid
D. None of these
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Mercury is transported in metal containers made of________________?
A. Aluminium
B. Iron
C. Lead
D. Nickel
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Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
A. Armature of small motors/generators
B. Generators and small motors
C. Induction motors
D. High frequency transformers
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Approximate value of the modulus of elasticity for steel is about _____________ × 106kg/cm2?
A. 0.5
B. 2
C. 40
D. 75
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Carbon tetrachloride can be stored in a storage vessel made of________________?
A. High silicon iron (14% si)
B. Tin
C. Stainless steel
D. All a., b. and c.
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The main constituent of carborundum is ___________________ carbide?
A. Calcium
B. Silicon
C. Boron
D. Aluminium
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Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its ______________________?
A. High co-efficient of thermal expansion
B. Low thermal conductivity
C. High corrosion resistance
D. All a., b. and c.
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Corrosion involves exchange of electrons in ____________ corrosion?
A. Chemical
B. Electrochemical
C. Both a. & b.
D. Neither a. nor b.
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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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