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Solder is an alloy of lead and tin. It has a:

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Solder is an alloy of lead and tin. It has a: 

A. Low melting point and is used for welding electrical wires together. 

B. Low melting point and is used for welding heavy iron machinery. 

C. High melting point and is used for welding electrical wires together. 

D. High melting point and is used for welding heavy iron machinery.

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Solder has a low melting point, and upon giving a small amount of heat, it turns into liquid and solidifies on cooling.

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