A) 90% copper, 10% tin
B) 30% lead, 70% tin
C) 70% lead, 30% tin
D) 80% lead, 20% tin
Correct Answer: B
Solution :
Solder is an alloy of tin and lead (Sn = 67% and lead = 33%) It has got low melting point and is used as fuse wire and for welding in electrical circuits, etc. Hence, the correct option is (b).You need to login to perform this action.
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