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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.
The electronic configuration of copper (29 cu) is: (1)1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 9 , 4s 2 (2) 1s 2 , 2s 2 , 2p 6, 3s 2 , 3p 6 , 3d 10 , 4s 1 (3) 1s 2 , 2s
ACID-BASE TITRATIONS Titration curves: An acid-base titration is a useful experimental method for determining also the amount of an unknown acid or base in solution and th
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Lipids Lipids are constituents of plants and tissues that are insoluble in water although soluble in organic solvents like ether, carbon tetrachloride, chloroform, or benzene.
external treatment of hard water? Demineralisation of British water
Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.
the most stable structure of chrysene
how many solid state are there?
A cubic solid is made of two elements X and Y. Atoms V are at the corners of the cube and X at the body centre. What is the formula of the compound?
The de-Broglie wavelength associated with a particle of mass 10 -6 kg moving with a velocity of 10 ms -1 , is: (1) 6.63 x 10 -22 m (2) 6.63 x 10 -29 m
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