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.Management Sciences
Category: Materials and Construction
High speed steel should have high___________________?
A. Toughness
B. Wear resistance
C. Hardenability
D. Both B. & C.
Nickel and molybdenum are the basic constituents of___________________?
A. Hastelloy
B. German silver
C. Inconel
D. Solder
As the impurities are oxidised, the melting point of iron___________________?
A. Decreases
B. Remains unchanged
C. Increases
D. May increase or decrease; unpredictable
Hydrochloric acid is stored in a ________________vessel?
A. Lead lined steel
B. Rubber lined steel
C. Stainless steel
D. Cast iron
Which of the following has the least value of ultimate tensile strength (UTS) ?
A. Medium carbon steel
B. High carbon steel
C. Cast iron
D. Wrought iron
Inconel is an alloy of_________________?
A. Tin, zinc and nickel
B. Iron, nickel and chromium
C. Copper and nickel
D. Copper and tin
Thermometer bulb & capillary in case of mercury filled pressure spring expansion thermometer is normally made of ______________ as mercury does not amalgamate with it?
A. Copper
B. Copper alloys
C. Stainless steel
D. Monel
Slow plastic deformation of metals under a constant stress is termed as _____________ failure?
A. Fatigue
B. Endurance
C. Creep
D. None of these
Lead is_____________________?
A. Not resistant to corrosion
B. Used as a cathodic material
C. Not used as pigment (in its compound forms) for paints
D. Used as a shock absorber (in mattress form) between the foundation and steel framework of
skyscraper buildings
Very high sulphur in pig iron makes ___________________?
A. Its casting unsound
B. Its hard and machinable
C. Its brittle and malleable
D. All A., B. & C.
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