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6.3 Interpreting and interacting with earth systems

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Question 16
F

Fresh water from a reservoir is treated to make it potable.

What is the purpose of filtration and of chlorination?

[1]
A

Filtration: removes dissolved salts; chlorination: kills microorganisms

B

Filtration: kills microorganisms; chlorination: removes insoluble solids

C

Filtration: removes insoluble solids; chlorination: removes dissolved salts

D

Filtration: removes insoluble solids; chlorination: kills microorganisms

Markscheme

6.3 Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Interpreting and interacting with earth systems

51 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.

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