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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 involves:
- Sedimentation: This is the first step where particles and impurities settle at the bottom of the water body.
- Filtration: The water is then filtered to remove any remaining solid particles.
- Chlorination: Finally, chlorine is added to disinfect the water, making it safe for drinking.
Based on this process, the correct row is D:
| first | second | third | |
|---|---|---|---|
| D | sedimentation | chlorination | filtration |