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Chemical reactivity : The substances which react violently or produce flame on contact with water can be given suitable chemical treatment to convert them into nonreactive form before running into the drainage.
Example: Sodium metal.
Those substances which generate heat on mixing with water are treated carefully with large quantity of water in a safe area.
Example: Calcium oxide.
Acidic chemical wastes are first treated with large quantity of sodium carbonate anddhen with a large quantity of water. The treatment with sodium carbonate neutralises the acid since the former is a base.
How do we represent atoms without drawing all the subatomic particles? Atoms can be represented by their chemical symbols. For example, H is hydrogen, He is helium, etc. All t
what is the passage for both air and food ?
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