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10.1 Using the Earth's resources and obtaining potable water

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Question 3

Samples of water were taken from the inlet and outlet of a fish farm. The sample labels were lost.

SampleOrganic matter in mg/dm3\text{mg} / \text{dm}^3mg/dm3Number of harmful microbes in 1 cm3
A460
B16018 000

Use the data to explain which sample is waste water from the outlet and why this sample would need more treatment than the inlet water before it could be made potable.

[3]
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10.1 Using the Earth's resources and obtaining potable water Questions

  1. GCSE
  2. /Chemistry
  3. /10.1 Using the Earth's resources and obtaining potable water

87 exam-style questions on AQA GCSE Chemistry 10.1 Using the Earth's resources and obtaining potable water, covering 10.1.1 Using the Earth's resources and sustainable development, 10.1.2 Potable water, 10.1.3 Waste water treatment, and 10.1.4 Alternative methods of extracting metals. Each one has a worked solution and a mark scheme showing where the marks go.

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