Related Questions

Addition of nickel to copper improves its
A Machinability
B Ductility
C Strength
D Hardness
Silicon when added to copper improves
A Machinability
B Hardness
C Hardness and strength
D Strength and ductility
Presence of nickel in steel improves its
A Corrosion resistance
B Cutting ability
C Wear resistance
D All of the above
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces
A White cast iron
B Nodular cast iron
C Malleable cast iron
D Alloy cast iron
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is
A 12
B 36
C 54
D 68
Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel
A 24 %
B 36 %
C 40 %
D 60 %
If 2 kg of metal, of which 1/3 is zine and the rest is copper , be mixed with 3 kg of metal, of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 17 : 43
B 13 : 42
C 19 : 43
D 15 : 42
If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
A 13 : 42
B 19 : 43
C 15 : 42
D 17 : 43
The addition of which of the following improves machining of copper?
A Sulphur
B Vanadium
C Tin
D Zinc
German silver is an alloy of copper, nickel and
A Zinc
B Silver
C Tin
D Lead

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