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.Management Sciences
Category: Materials and Construction
Nickel (56%) and molybdenum (17%) alloys are called________________?
A. Monel
B. Hastelloy C
C. Inconel
D. Bronzes
In a plate type heat exchanger, heat transfer plates are never made of _________________?
A. Stainless steel
B. Cast iron
C. Titanium
D. Hastelloy C
Mild steel storage vessels are suitable for the storage of___________________?
A. Anhydrous ammonia
B. Fatty acids
C. Hydrochloric acid (95%)
D. Sulphuric acid (25%)
Caustic soda is transported in _____________ lined containers ?
A. Glass
B. Nickel
C. Neoprene
D. Either B. or C.
All materials obey Hooke’s law within elastic limit. When elastic limit is reached, the tensile strain__________________?
A. Increases very quickly
B. Decreases very quickly
C. Increases in proportion to stress
D. Decreases in proportion to stress
Valves in pipe size of 2″ and under are normally made of_______________________?
A. Wrought iron
B. Brass
C. Bronze
D. Monel
Monel alloy is____________________?
A. The costliest of all the alloys of nickel
B. Not suitable for making kitchen utensils
C. Used for making steam valves and turbine blades as it resists steam attack at high temperature
D. Not used in cast and wrought forms
Chilled iron castings are__________________?
A. Easily machinable
B. Soft on surface
C. Highly wear resistant
D. None of these
Glass is corroded by________________?
A. Fluorine (dry or wet)
B. Sulphuric acid
C. Phosphoric acid
D. None of these
Ceramic materials__________________?
A. Are exemplified by clay and mica
B. Are poor electrical conductors due to lack of free electrons
C. Never exhibit polymorphism
D. All A., B. and C.
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