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

  • A
    Low melting point and is used for welding heavy iron machinery.
  • B
    Low melting point and is used for welding electrical wires together.
  • 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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