Q. Balls in a ball mill are usually made of
✅ Correct Answer: (A)
Steel
Materials And Construction MCQs | Page - 4
Dear candidates you will find MCQ questions of Materials And Construction here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Concentrated HCl at 30°C can be stored in a vessel made of
✅ Correct Answer: (C)
PTFE and porcelain
Q. Brine (15% concentration) can be stored in a vessel made of
✅ Correct Answer: (B)
Monel
Q. A bearing metal should not have
✅ Correct Answer: (B)
Low thermal conductivity
Q. White cast iron as compared to grey cast iron is
✅ Correct Answer: (D)
All of the above
Q. Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by
✅ Correct Answer: (B)
Acetic acid
Q. To improve the machinability of steel by its softening, it is subjected to
✅ Correct Answer: (B)
Annealing
Q. Which of the following is the most widely used insulating material for steam carray-ing pipelines?
✅ Correct Answer: (D)
Glass wool and 85% magnesia
Q. 18/8 stainless steel means, that it contains
✅ Correct Answer: (A)
18% chromium and 8% nickel
Q. Which of the following is produced by condensation polymerisation?
✅ Correct Answer: (A)
Bakelite
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