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- Created by: Busayoxo
- Created on: 21-12-15 16:13
1. How can the copper be purifed?
- Through heating
- By reduction of carbon
- By electrolysis
- By reduction by iron
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Other questions in this quiz
2. What is used in bioleaching to break the bonds of copper compound and make a leachate solution?
- Bacteria
- Alloys
- Plants
- Copper
3. Why are metals that are extracted by electrolysis expensive?
- The use of large amounts of energy in extraction
- Since they are more reactive than carbon
- Since they are higher up in the reactivity series
- Since they are pure metals
4. What is the defintion of an alloy?
- The breakdown of a substance using heat
- The incomplete breakdown of a carbon
- A mixture of metals
- A mixture of carbon and iron
5. Which of the following is NOT a step of phytomining?
- The ash is dissolved in sulphuric acid to make a solution
- Plants absorb metal compounds
- Plants used to break the bonds of the copper compound and make a leachate solution
- Plants are buried to produce ash
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