|
Solder is an alloy of |
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(a) |
tin and lead |
(b) |
tin and copper |
|
(c) |
tin, copper and zinc |
(d) |
tin, lead and zinc |
|
Solder is an alloy of |
|||
|
(a) |
tin and lead |
(b) |
tin and copper |
|
(c) |
tin, copper and zinc |
(d) |
tin, lead and zinc |