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Crystallisation

Dissolved gas...

Question

Dissolved gases can be removed from water by:

A

chlorination

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B

boiling

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C

filtration

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D

both A and C

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Solution

The correct option is B boiling
Dissolved gases can be removed from water by boiling.
Water contains certain gases in dissolved state. The higher the temperature of a solution becomes, the less a gas dissolves provided it doesn't react with the solvent. Consequently, heating/boiling a solution can expel the remaining gas.

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Dissolved gases can be removed from liquids by heating because:

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Fill the following crossword using the following statements:

ACROSS
3 The chief dissolved salt present in seawater
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DOWN
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5 The hardness that can be removed by boiling
6 Water which occurs in a free state, in nature

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