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Which statement about extracting copper by phytoextraction is correct? A Bacteria in the soil absorb the copper ions - OCR Gateway - GCSE Chemistry: Combined Science - Question 10 - 2018 - Paper 1

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Which statement about extracting copper by phytoextraction is correct? A Bacteria in the soil absorb the copper ions. B Plant ash is equivalent to a high grade ore... show full transcript

Worked Solution & Example Answer:Which statement about extracting copper by phytoextraction is correct? A Bacteria in the soil absorb the copper ions - OCR Gateway - GCSE Chemistry: Combined Science - Question 10 - 2018 - Paper 1

Step 1

A Bacteria in the soil absorb the copper ions.

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Answer

This statement is misleading as phytoextraction primarily involves plants, not bacteria directly absorbing copper ions.

Step 2

B Plant ash is equivalent to a high grade ore.

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Answer

This statement is correct. Plant ash, after biomass is burned, can contain a significant amount of metals, making it comparable to high-grade ores.

Step 3

C Plant roots absorb copper metal from the soil.

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Answer

This is incorrect. While plant roots do absorb copper, it is in ionic form and not as a metal.

Step 4

D The plants are crushed to extract the copper ions.

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Answer

This statement is also incorrect as the extraction of copper ions primarily occurs through the uptake by the plants, not by crushing them.

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