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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.
Q. Illustrate Structure of the Water Molecule? Ans. A water molecule is composed of two hydrogen atoms and one oxygen atom covalently bonded together. The following anim
The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
The number of electrons which can be accommodated in an orbital is: (1) One (2) Two (3) Three (4) Four Ans: Two
Concentration of electrons in the conduction band At equilibrium, there is no net current flowing across p-n junction. Concentration of electrons in the conduction band in cond
name and chemical formula of blue vitriol
in Cr atom the number of electron having n+m=3
Physical properties of Acetone - Aldehydes and Ketones (a) Acetone is a colourless liquid with characteristic pleasant odour. (b) Acetone is inflammable liquid. It boils at
two equivalent - one equivalent
Are Facial & Meridinal optical active?
explain why carbon tetra-chloride does not dissolve in water?
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