The composition of soft solder is____
A. Lead-37%, tin-63%
B. Lead-50%, tin-50%
C. Lead-63%, tin-37%
D. Lead-70%, tin-30%
Answer:A
The composition of soft solder is____
A. Lead-37%, tin-63% B. Lead-50%, tin-50% C. Lead-63%, tin-37% D. Lead-70%, tin-30%