Question

Solder is an alloy of
1. Cu and Sn.
2. Fe and Zn.
3. Pb and Sn.
4. Ag and Zn.

Answer 1

Correct Answer - Option 3 : Pb and Sn.

The correct answer is Pb and Sn.

• Soldering is the process of joining two metal objects together by a third soft metal alloy which is called solder.
• Solder is a metal alloy that melts at a lower temperature than the metals being soldered.
• Two types of solder are commonly used.
  • One is a soft solder, which is an alloy of tin(Sn) and lead(Pb).
  • The other is a hard solder, which is an alloy of copper and zinc also called spelt or silver solder. 
• Element Tin (Sn) belongs to Group 14 of the periodic table.
  • Atomic Number - 50
  • Atomic Mass  - 118.710 amu.
• Element Lead (Pb) belongs to Group 14.
  • Atomic Number - 82
  • Atomic Mass - 207.2 amu.