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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. What are the characteristics of bases? Ans. Common bases are borax, baking soda, and antacids. These are some characteristics of bases: They taste bitter
Which of the following has maximum number of unpaired electron (atomic number of Fe 26): (1) Fe (2) Fe (II) (3) Fe (III) (4) Fe (IV) An
A3p orbital has: (1) Two spherical nodes (2) Two non-spherical nodes (3) One spherical and one non-spherical nodes (4)One spherical and two non-spherical nodes A
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get calcium EDTA from disodium EDTA and calcium which in complexomteric reaction. how mechanism of making ??
The bond energy of an O- H bond is 109 kcal mol 1. When a mole of water is formed from H and O atoms, then 218 kcal is released. Two O-H bonds are there is H2O so 2*109 kcal an
Give an example of a pseudo first order reaction. Write the IUPAC name of the following: (CH 3 ) 2 C=CHCOCH 3
How is 7.979 times 10 to the 4th in scientific notation for the ordinary notation: 7979?
Line imperfection : Displacement with a curved boundary makes a mixed dislocation line at the boundary.
effects of ano,alous behaviour of beryllium
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