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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 ratio between the neutrons in C and Si with respect to atomic masses 12 and 28 is: (1) 2 : 3 (2) 3 : 2 (3) 3 : 7 (4) 7 : 3 Ans: 3 : 7
why they are called noble gases
Classic flame photometric experiment: In a classic flame photometric experiment, a solution of the analyte is aspirated within the burner and dispersed into the flame as a fin
Explain the oxidation product of the respiratory chain? How is the free energy kept at the inner mitochondrial membrane independently of chemical bonds, and how is it used for
Determination of accuracy of volume marking on glassware I. PURPOSE OF THE EXPERIMENT To become familiar with the laboratory environment and to acquire skills in accur
how yield of ether is highest when the halide ion is displased from a primary rather than secondary or tertiary halide?
cis-2-butene is a symmetrical alkene Because cis-2-butene is a symmetrical alkene, it reacts to give the similar product in either oxymercuration- reduction or hydroboration-ox
The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is: (1) 2 : 1 (2)1 : 1 (3)1 : - 1 (4)
what are the application of law of chemical combination?
What do you understand by Miller indices of a crystal plane? Miller Indices are a symbolic vector representation for the orientation of an atomic plane in a crystal lattice an
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