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Questions and Answers
What is the purpose of zinc plating iron used for construction?
What is the purpose of zinc plating iron used for construction?
- To improve electrical conductivity
- To protect from corrosion and rusting (correct)
- To increase the weight of the iron
- To make it more malleable
In gold plating, what are silver ornaments coated with?
In gold plating, what are silver ornaments coated with?
- Gold (correct)
- Bronze
- Platinum
- Silver
What happens when an electric current is passed through a copper sulfate solution?
What happens when an electric current is passed through a copper sulfate solution?
- Sulfur reacts with copper
- Sulfate changes into magnesium
- Copper turns into zinc
- Copper sulfate dissociates into copper and sulfate (correct)
Which electrode should be attached to the positive terminal of the battery in the process described?
Which electrode should be attached to the positive terminal of the battery in the process described?
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What is the purpose of using a thick rod of impure copper in the purification process?
What is the purpose of using a thick rod of impure copper in the purification process?
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