the machinability of aluminium increases when _________ is added to aluminium. Options: A . &nbsp Copper B . &nbsp Magnesium C . &nbsp Silicon D . &nbsp Lead and bismuth

the machinability of aluminium increases when ________

Question

The machinability of aluminium increases when _________ is added to aluminium.

Options:

A . Copper

B . Magnesium

C . Silicon

D . Lead and bismuth

Answer: Option D
Explanation :

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