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6.1 Improving processes and products

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Question 10
H

In bioleaching, bacteria are used to produce a solution containing copper compounds from a low-grade copper ore.

Which method could be used to obtain copper metal from this solution?

[1]
A

Add scrap iron, because iron is more reactive than copper.

B

Add silver, because silver is less reactive than copper.

C

Evaporate the water, because copper metal crystals are left behind.

D

Filter the solution, because copper metal is left on the filter paper.

Markscheme

6.1 Improving processes and products Questions

  1. GCSE
  2. /Chemistry
  3. /6.1 Improving processes and products

61 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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