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Potable Water (GCSE Chemistry)
The following is a GCSE Chemistry test covering 'Potable Water' from the broader topic Using Resources. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Which process causes suspended solids to settle out of water after adding a coagulant?
Why is monitoring the chlorine residual important at the far end of a drinking water distribution system?
What is a major disadvantage of desalination (turning seawater into drinking water)?
Which chemical is typically added to remove colour and assist particle clumping before sedimentation (floc formation)?
Which test would indicate the presence of harmful coliform bacteria in a drinking water sample?
Why is chlorination still widely used despite the formation of some disinfection by-products?
Which technology removes dissolved salts and many impurities by forcing water through a semipermeable membrane?
What is the main reason rainwater collected from clean roofs still often needs treatment before drinking?
Which ion is mainly responsible for temporary hard water that can be removed by boiling?
A supplier finds nitrate (NO3-) concentration above safe levels in groundwater used for drinking. Which is the main health concern?
What is the correct definition of potable water?
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