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10.1 Using the Earth's resources and obtaining potable water

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Question 26
H

What are the two products formed when sewage passes through a sedimentation tank?

[1]
A

Grit that settles out, and screenings that float on the surface

B

Methane gas that is burned, and a residue used as a fertiliser

C

Sewage sludge that settles out, and effluent that remains above it

D

Clean water that can be drunk, and a sludge that must be burned

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

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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