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10.1 Using the Earth's resources and obtaining potable water

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Question 11

A remote observatory can obtain fresh water or salty water. Producing the same volume of potable water from the salty water uses much more energy. Which treatment causes this difference?

[1]
A

Reducing harmful microbes by sterilisation

B

Breaking down organic matter using bacteria

C

Trapping suspended particles in filter beds

D

Removing dissolved salts by desalination

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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