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10.1 Using the Earth's resources and obtaining potable water

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Question 18
H

Ultraviolet light is used to sterilise water at some treatment works. What is an advantage of using ultraviolet light rather than chlorine?

[1]
A

Ultraviolet light removes the dissolved salts from the water as well

B

Ultraviolet light goes on protecting the water in the pipes afterwards

C

Ultraviolet light works even when the water is cloudy with solid particles

D

Ultraviolet light adds no substance to the water, so there is no taste

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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