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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.
how many laws of crystallography?
The mass of a photon with a wavelength equal to 1.54 x 10 -8 cm is: (1) 0.8268 x 10 -34 kg (2) 1.287 x10 -33 kg (3)1.4285x 10 -32 k
Which set of quantum numbers for an electron of an atom is not possible: (1) n=1 l=0, m=-0, s= +1/2 (2) n=1, l=1, m=-1, s= +1/2 (3) n=1, l=0, m=0, s= -1/2 (4) n=
Which of the following electronic configurations is not possible: (1) 1s 2 , 2s 2 (2) 1s 2 , 2s 2 , 2p 6 (3) 3d 10 4s 2 4p 2
A medicine dropper is an instrument used to calculate small amount of liquids, usually in milligrams.
why do we add HCl in common ion effect of II froup
#question.What is the balanced equation for the reaction of aluminium nitrate solution and sodium carbonate solution; where aluminium hydroxide is formed.
photochemical combination of hydrogen molecule and iodine molecule
how can the melting point be used to determine the purity of organic compounds
Explain about Parke Process? Parke method for refining lead, which is also a concentration process for silver, relies upon the selective dissolution of silver in molten zinc.
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