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CHEMISTRY

JAMB 2007 - Question 5

Chemistry 2007 JAMB Past Questions - Question 5: The soft solder used for welding and plumbing is an alloy of

Choose the correct answers from the options given.

The soft solder used for welding and plumbing is an alloy of

A: lead and tin

B: iron and tin

C: lead and zinc

D: iron and zinc.

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Correct Answer

Explanation

The soft solder commonly used for welding and plumbing is typically an alloy of lead and tin. This alloy is known for its low melting point, making it suitable for joining metals at lower temperatures. The combination of lead and tin creates a solder with desirable properties for these applications, such as good flow characteristics and a strong bond. The specific ratio of lead to tin can vary, but common compositions include 60% tin and 40% lead (60/40) or 63% tin and 37% lead (63/37).