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Q. What is Calcinations process?
This is fie method of heating the concentrated ore in a limited supply of air to a high temperature but under the fusion temperature. In calcinations, volatile constituents of an ore are expelled. Hydrated and Hydroxide ores lose their water forming metal oxides. In case of carbonate ores, carbon dioxide is lost and metal oxides are made.
Reference solution: A proper reference solution contains color reagent plus sample buffer. The difference between the reference and a sample is that the concentration of
Bakelite: It is thermosetting plastics which are most widely used and the most important plastics. Preparation: It is formed by condensation reaction of phenol an
character table symmetry element ammonia
The configuration 1s 2 2s 2 2p 5 3s 1 shows: (1) Excited state of O 2 - (2) Excited state of neon (3) Excited state of fluorine (4) Ground state of fluorine ato
why sio doesn''t exist under normal conditions
The electronic configuration of a dipositive metal M 2+ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be: (1) 30 (2)32
Energy of orbit: (1) Increases as we move away from nucleus (2) Decreases as we move away from nucleus (3) Remains same as we move away from nucleus (4)None of the
reaction of bisulphite with acid chlorides
energy of electron in hydrogen atom
Give chemical reaction in support of each of the following statements: (i) The +1 oxidation state gets stabilised progressively from Ga to TI in Group (ii) All the bonds PCl5
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