Skip to content

Course home

Question bank·6.3 Interpreting and interacting with earth systems
Sign up

6.3 Interpreting and interacting with earth systems

EasyMediumHard
12345678910111213141516171819202122
Question 6

Water taken from a river contains small clay particles, dissolved sodium chloride and harmful microorganisms. The water is passed through beds of sand and gravel and then chlorine is added.

Which option shows the expected outcome for all three components?

[1]
A

The clay particles are removed, the dissolved sodium chloride remains and the harmful microorganisms are killed.

B

The clay particles are removed, the dissolved sodium chloride is removed and the harmful microorganisms remain.

C

The clay particles remain, the dissolved sodium chloride is removed and the harmful microorganisms are killed.

D

The clay particles are removed, the dissolved sodium chloride remains and the harmful microorganisms remain.

Markscheme

6.3 Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Interpreting and interacting with earth systems

109 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.

More questions