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- 1. Multiple Choice
What is potable water?
pure water
Water that has dissolved ions in but is safe to drink
Water from an underground source
Water that is safe to wash in
- 2. Multiple Choice
How is water sterilised?
Passing fresh water through filter beds and sterilising
Removal of salt from sea water
Reverse osmosis or distillation
Using chlorine, ozone or ultraviolet light
- 3. Multiple Choice
What is desalination?
Passing fresh water through filter beds and sterilising
Removal of salt from sea water
Reverse osmosis or distillation
Using chlorine, ozone or ultraviolet light
- 4. Multiple Choice
In what ways can desalination be carried out?
Passing fresh water through filter beds and sterilising
Removal of salt from sea water
Reverse osmosis or distillation
Using chlorine, ozone or ultraviolet light
- 5. Multiple Choice
What is the main disadvantage of desalination?
It requires a large amount of energy
It is carried out at a high pressure
A low temperature is used
It has a low atom economy
- 6. Multiple Choice
What is the first step in the water treatment process?
coagulation
filtration
sterilisation
concentation
- 7. Multiple Choice
What does chlorination do to the water?Removes microorganismsCleans the waterMakes the water taste niceRemoves twigs and sediment - 8. Multiple Choice
Which substances would you NOT find in pure water?
Bacteria
Minerals
Dirt
Acids
None of these
- 9. Multiple Choice
Boiling temperature of water is
10°C
110°C
100°C
0°C
- 10. Multiple Choice
Water is a/an
Element
Compound
Mixture
Non of these
- 11. Multiple Choice
What type of bonding is in water?
metallic
ionic
covalent
- Answer choicesTagsAnswer choicesTags