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.Management Sciences
Category: Materials and Construction
The hardest material just prior to diamond in Mho’s scale is___________________?
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A. Topaz
B. Carborundum
C. Corundum
D. Calcite
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________?
A. Tungsten
B. Vanadium
C. Silicon
D. All A., B. & C.
Nickel as a material of construction__________________?
A. Is used as an alloying element for both ferrous & non-ferrous alloys
B. Is paramagnetic below 415° C (its Curie temperature)
C. Diamagnetic
D. Has a body centred cubic (bcc) crystal lattice structure
Brine solution is stored/treated in _______________ lined vessels/pipes?
A. Rubber
B. Lead
C. Glass
D. Nickel
Beehive coke ovens are made of ________________ bricks?
A. Silica
B. Fireclay
C. Silicon carbide
D. Corundum
A material capable of undergoing large permanent deformation, when subjected to compression is termed as___________________?
A. Malleable
B. Ductile
C. Brittle
D. None of these
Shock resisting steels should possess high___________________?
A. Hardness
B. Toughness
C. Tensile strength
D. Wear resistance
Which has the maximum melting point out of the following ?
A. Steel
B. Cast iron
C. Stainless steel
D. Wrought iron
Thermosetting polymers are_________________?
A. Injection moulded
B. Cast molded
C. Extruded
D. None of these
18/8 steel is a/an __________ stainless steel ?
A. Austenitic
B. Ferritic
C. Martensitic
D. None of these
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