Related Questions

Addition of nickel to copper improves its
A Machinability
B Ductility
C Strength
D Hardness
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
Silicon when added to copper improves
A Machinability
B Hardness
C Hardness and strength
D Strength and ductility
Nickel when added to copper improves
A Machinability
B Hardness
C Hardness and strength
D Strength and ductility
The addition of antimony in tin-based alloys improves its
A Rupture strength and hot hardness
B Impact strength and bonding strength
C Deformation resistance
D Wear resistance
Addition of zircon to silica refractory brick improves its
A Crushing strength
B Resistance to slag attack
C Neither A nor B
D Neither A nor B
Addition of silicon to aluminium improves its
A Corrosion resistance
B Machinability
C Castability
D None of these
Australia imports, no copper in Australia equals 85% of the amount of copper produced by the private industry's use of produced by the country's mines each year. If the information above is true.which of the following conclusions can most reliably be drawn?
A Australia imports copper ore from other countries.
B SOme copper in Australia is recycled.
C Asutralia 's industry wasters substantial amounts of copper.
D Each year, Austria produces more copper than the previous year.
Which of the following metals can displace copper from copper sulphate solution ?
A Platinum
B Mercury
C Iron
D Gold

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