Skip to content

Course home

3.2 Methods of separating and purifying substances

3.2 Methods of separating and purifying substances

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
Question 15

During the purification of drinking water for tap water supply, chlorine gas is added to the water. Why is chlorine added to the water?

A

To filter out large suspended clay particles

B

To neutralise dissolved acidic compounds

C

To sterilise the water by destroying pathogenic microorganisms

D

To soften hard water by removing calcium and magnesium ions

Markscheme

3.2 Methods of separating and purifying substances Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Methods of separating and purifying substances

107 exam-style questions on Edexcel GCSE Chemistry 3.2 Methods of separating and purifying substances, covering 3.2.1 Pure substances and mixtures, 3.2.2 Techniques for separating mixtures, 3.2.3 Paper chromatography and Rf values, and 3.2.4 Making water potable. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank