Skip to content

Course home

Interpreting and interacting with earth systems

Interpreting and interacting with earth systems

EasyMediumHard
12345678910111213141516171819202122232425
Question 17

During the treatment of tap water, a substance is added to cause tiny suspended particles to clump together so they can be removed more easily by filtration.

Which substance is used for this purpose?

A

Aluminium sulfate

B

Carbon dioxide

C

Chlorine

D

Fluoride

Markscheme

Interpreting and interacting with earth systems Questions

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

32 exam-style questions on OCR GCSE Chemistry Interpreting and interacting with earth systems. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank