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Alloy Formation

Why solder is...

Question

Why solder is used for welding electrical wires?

A

Because the constituent alloys are cheap

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B

Because it has less melting point

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C

Because it has high melting point

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D

Because it is very light

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Solution

The correct option is C Because it has less melting point
Solder is an alloy of lead and tin. It contains $50$ % lead and $50$ % tin. It is an alloy which has a low melting point. So, used for soldering (welding) electrical wires together.

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