1.6 Portable Water From Freshwater (GCSE Chemistry)

The following is a GCSE Chemistry test covering '1.6 Portable Water From Freshwater'

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Which process is employed by countries having coastlines but limited freshwater sources?

Which one is commonly used to sterilise drinking water besides chlorine?

Desalinated seawater is usually:

Desalination uses what main process to remove salts?

Rainwater normally contains:

Freshwater becomes potable by using filtration to remove:

Apart from reverse osmosis, desalination commonly involves:

What is potable water?

Reverse osmosis involves:

What is the first stage in making freshwater potable?

Why might some countries avoid reverse osmosis?

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