Give reasons:
Alcohol is mixed with water and is used in car radiators.
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Alcohol is mixed with water and is used in car radiators to prevent it from freezing in cold weather because presence of impurities in water lowers the freezing point.
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Define:
(a) Soft water
(b) Hard water
Name three water borne diseases.
Carbonated drinks are bottled under high pressure.
Name the compounds responsible for:
(i) temporary hardness
(ii) permanent hardness of water.