Bell metal is an alloy of __________________?
A. Copper & zinc
B. Copper & tin
C. Copper & nickel
D. Zinc & tin
Materials and Construction
Hastelloy C is a good material of construction in chemical process industry, since it is ___________________?
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
Most of the common metals have ______________ crystal structure?
Most of the common metals have ______________ crystal structure?
A. Cubic
B. Hexagonal
C. Orthorhombic
D. None of these
Evaporator used for concentrating tomato juice is made of __________________?
Evaporator used for concentrating tomato juice is made of __________________?
A. Nickel
B. Brass
C. Stainless steel-glass lined
D. Cast iron-rubber lined
Lead lined equipments & vessels are suitable for handling __________________?
Lead lined equipments & vessels are suitable for handling __________________?
A. Hydrochloric acid (10%)
B. Nitric acid
C. Sulphuric acid upto 60°C
D. All A., B. and C.
Carbon is present in steel wholly in the__________________?
Carbon is present in steel wholly in the__________________?
A. Combined form
B. Free state as graphite
C. Both A. and B.
D. Neither A. nor B.
Mild steel is a/an _____________ steel?
Mild steel is a/an _____________ steel?
A. Low carbon
B. Medium carbon
C. High carbon
D. High alloy
Maximum permissible sulphur content in steel is ______________ percent?
Maximum permissible sulphur content in steel is ______________ percent?
A. 0.015
B. 0.055
C. 0.505
D. 0.805
Maximum consumption of lead is in the manufacture of _________________________?
Maximum consumption of lead is in the manufacture of _________________________?
A. Storage batteries
B. Solder alloys
C. Electric cable sheathing
D. Lead lined vessels
Karbate is____________________?
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.