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.Management Sciences
Category: Materials and Construction
Cold work tool steel should have_________________?
A. High toughness
B. Poor hardenability
C. High wear resistance
D. All A., B. & C.
Which of the following is the lightest of engineering metals ?
A. Magnesium
B. Aluminium
C. Titanium
D. Tin
Water gas generator is made of__________________?
A. Carbon steel-brick lined
B. Stainless steel-lead lined
C. Cast iron
D. High carbon steel-porcelain lined
The most distinguished property of malleable cast iron is its high_________________?
A. Ductility
B. Hardness
C. Malleability
D. None of these
Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________?
A. Nuts
B. Bolts
C. Chisels
D. Studs
Hastelloy C is a good material of construction in chemical process industry, since it is ___________________?
A. Highly corrosion resistant and is readily fabricated
B. Relatively inexpensive although it can be fabricated with some difficulty
C. Corrosion resistant to most alkalis, particularly because of its copper content
D. Light and resists attack by acids
The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?
A. Brass for low
B. Nickel alloys for high
C. Both A. & B.
D. Aluminium for all
Karbate is____________________?
A. A mixture of iron dust and saw dust
B. Carbon impregnated with resin (usually Bakelite)
C. An acid resistant material
D. Both B. and C.
Copper has very low________________?
A. Malleability
B. Ductility
C. Tensile strength
D. Thermal & electrical conductivity
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