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Potable water is water that is suitable for drinking - Edexcel - GCSE Chemistry - Question 3 - 2022 - Paper 1
Question 3
Potable water is water that is suitable for drinking. (a) River water can be treated to make it potable. Chlorination, filtration and sedimentation are three of the... show full transcript
Worked Solution & Example Answer:Potable water is water that is suitable for drinking - Edexcel - GCSE Chemistry - Question 3 - 2022 - Paper 1
Step 1
Which row of the table shows these three processes in the order in which they are carried out?
Answer
The correct order for making river water potable is:
- Sedimentation - This is the first step where larger particles are allowed to settle at the bottom of a container.
- Filtration - In this step, the water is passed through filters to remove remaining small particles and impurities.
- Chlorination - Finally, chlorination is performed to kill any harmful bacteria and pathogens in the water.
Thus, the correct row from the table is option D: sedimentation (first), filtration (second), chlorination (third).