Which one of the following tin-lead soldiers has the lowest melting point? A. 60/40 B. 70/30 C. 40/60 D. 50/50

1 answer:

3 0

There is an inverse relation between the tin in the tin-lead ratio and the melting point of the soldier, this means that as the amount of tin increases in the tin-lead ratio, the melting point decreases and vice versa.
Based on this, the soldier with the lowest melting point is the one with the highest tin ratio.
Answer : (B) 70/30

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