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Materials and Construction MCQs

Chemical Engineering Objective Questions

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106. Dilute sulphuric acid is transported in __________ pipes.
A. Mild steel
B. Lead
C. Copper
D. Special alloys
Discussion
107. Silicone rubber is not resistant to the corrosive action of
A. Sulphuric acid (10%)
B. Sulphuric acid (95%)
C. Ether
D. Both B and C
Discussion
108. With increase in carbide/graphite ratio in cast iron, its
A. Hardness & brittleness increases
B. Ductility decreases
C. Both A & B
D. Neither A nor B
Discussion
109. Locomotive boiler tubes are made of __________ alloys.
A. Arsenic copper
B. Magnesium
C. Aluminium
D. Nickel
Discussion
110. Coke oven regenerators are made of __________ bricks.
A. Fire clay
B. Silica
C. Low thermal conductivity
D. High electrical conductivity
Discussion
111. Beehive coke ovens are made of __________ bricks.
A. Silica
B. Fireclay
C. Silicon carbide
D. Corundum
Discussion
112. Cold worked steel parts are normally subjected to
A. Normalising
B. Hardening
C. Annealing
D. Shot peening
Discussion

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