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10.1 Using the Earth's resources and obtaining potable water

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Question 12
F

What is the first stage in the treatment of sewage at a sewage treatment works?

[1]
A

Anaerobic digestion of the sludge that has settled out

B

Screening and grit removal from the incoming sewage

C

Aerobic biological treatment of the effluent produced

D

Sedimentation of the sewage in large settlement tanks

Markscheme

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

40 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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