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10.1 Using the Earth's resources and obtaining potable water

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Question 19
H

Sewage sludge and effluent are separated by sedimentation and are then treated. Which statement is correct?

[1]
A

The sludge is treated aerobically and the effluent is digested anaerobically

B

The sludge is screened again and the effluent is passed through filter beds

C

The sludge and the effluent are digested together without any oxygen present

D

The sludge is digested anaerobically and the effluent is treated aerobically

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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