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Methods of separating and purifying substances

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Question 6

Water collected from a reservoir must be treated before it is safe to drink.

Three stages in this treatment process are chlorination, filtration, and sedimentation.

Which row in the table shows the correct order in which these three processes are carried out?

OptionFirst processSecond processThird process
Afiltrationchlorinationsedimentation
Bsedimentationfiltrationchlorination
Cchlorinationsedimentationfiltration
Dsedimentationchlorinationfiltration

First: filtration; Second: chlorination; Third: sedimentation

First: sedimentation; Second: filtration; Third: chlorination

First: chlorination; Second: sedimentation; Third: filtration

First: sedimentation; Second: chlorination; Third: filtration

Methods of separating and purifying substances Questions

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