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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.
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How to prevent the erosion of topsoil Use the trays constructed for the experience above. (a) Fill the trays with loose soil and tilt everyone the similar amount. Make furr
Decline of european science: By the middle of the second century B.C., the Greek empires were collapsing in anarchy andunder the weight of the more vigorous power of Rome. I
How did the Earth form and become spherical? The Earth's Shape : About five billion years ago the solar system was forming from gases and dust floating in space. Gravity, th
any information about animal tissue
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