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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 are electrons arranged around the nucleus? Electrons are arranged into very specific rings known as orbitals. Electron orbitals, sometimes referred to as electron shells, c
An experiment with a floating candle Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the
Explosives : As defined earlier, explosives release a large amount of gas and energy in a very short time. These are of four basic types: Mixed gases - Usually the mixture
Question 1. Explain the routes of administration of drugs 2. List 4 antimuscarinic drugs and mention their uses 3. Explain the role of bronchodilators in the treatment of
How can we know the parent material of soils?
kidney ,thyoroid gland
what is acid
How to make a simple vacuum pump Secure a bicycle or automobile hand pump. Open the pump and delete the piston. Un- screws the bolt that holds the leather washers. Reverse the
Oil extraction : Extraction of oil from the prepared oilseeds can be done by one of the following methods: (i) traditional method: ghani, (ii) Improved methods:
Air expands when heated To show that air expands when heated, fit an electric light bulb flask or a bottle with a single- whole stopper or cork which has a 30-cm length of glas
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