Question

What are the constituents of solder alloy?
A. Zinc and tin
B. Tin and iron
C. Lead and tin
D. Zinc and iron

Answer 1

Hint: Alloy is a mixture of two or more than metals. By mixing different metals in different proportions new properties are going to generate in the mixture. Because of these new properties alloys have vast application in various fields.

Complete step by step answer:
- In the question it is asked to write the constituents of solder alloy.
- Mostly solder alloy is used for welding of electric wires.
- Solder alloy mainly contains lead (Sb) and tin (Sn) in its composition.
- The solder is also used in heating, mechanical, electronics and other similar systems.
- Solder alloy is also used in jewelry too.
 - Therefore solder alloy contains lead and tin in its composition.
The correct answer is option “C” .

Additional Information :
- The alloy which contains lead and tin are called soft solders containing tin concentration in between 5 – 70 % by weight.
- At the time of plumbing metal pipes are going to be joined by a soft alloy called solder.
- To melt solder alloy there is a need for less temperature of electricity.

Note: Solder alloy have a melting point in the range of 90 to 450 $^{o}C$ . Generally at the time of melting solder alloy is going to join the wires (welding) together. At the time of joining of copper wires in the circuit board solder alloy is going to be used.