Addition of nickel to copper improves its_________________?
Correct answer: B. Hardness
- A. Machinability
- B. Hardness
- C. Strength
- D. Ductility
Explanation
Nickel strengthens the copper lattice and increases resistance to deformation, so copper-nickel alloys are harder than pure copper. Its major benefits are strength, hardness, and corrosion resistance rather than improved machinability.
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