The soft solder used for welding and plumbing is alloy of
Answer Details
The soft solder used for welding and plumbing is an alloy of lead and tin. This alloy has a low melting point, which makes it ideal for welding two pieces of metal together. When the solder is heated, it melts and flows into the joint, bonding the two pieces of metal together. The lead provides the ability to flow easily and the tin provides the strength to hold the joint together.