Chemical Process
Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

Reverse osmosis
Lime soda
Sand filter
Permutit

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Chemical Process
Unsaturated oils compared to saturated oils have

Lower melting point & higher reactivity to oxygen
Higher melting point & lower reactivity to oxygen
Lower melting point & lower reactivity to oxygen
Higher melting point & higher reactivity to oxygen

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