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.Management Sciences
Category: Materials and Construction
Stainless steel is not corroded by _____________________?
A. Hydrochloric acid (10%)
B. Nitric acid (10%)
C. Sulphuric acid (10%)
D. Saturated brine
Steel tower used for the storage of oleum________________?
A. Is lined with lead
B. Need not be lined
C. Is lined with rubber
D. Is lined with acid-proof bricks
Wood is corroded by__________________?
A. Hydrochloric acid
B. SO2 (dry or wet)
C. Chlorine (dry or wet)
D. All A., B. and C.
Steel balls for ball bearings are generally made of ______________ steel?
A. Cast
B. Stainless
C. Free carbon
D. Carbon chrome
Metalloid is__________________?
A. Highly electronegative in nature
B. An element which exhibits the properties of both metal & non-metal
C. An alloy
D. All A., B. and C.
Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of___________________?
A. Concrete
B. Steel
C. Zircaloy
D. Graphite
Which of the following is the easiest to bend ?
A. Steel
B. Stainless steel
C. Cast iron
D. Wrought iron
Aqueous nitric acid is stored in________________?
A. Steel drum
B. Stainless steel vessel
C. Cast iron vessel lined with acid-proof masonry brick
D. Cast iron vessel
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its___________________?
A. High strength to weight ratio
B. Low temperature strength properties
C. Its ability to be cast, rolled, forged & stamped
D. High strength and corrosion & oxidation-resistance at elevated temperature
To improve the machinability of steel by its softening, it is subjected to __________________?
A. Cold working
B. Annealing
C. Shot blasting
D. Heating
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