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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 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
When an electron jumps from lower to higher orbit, its energy : (1) Increases (2) Decreases (3) Remains the same (4) None of these Ans: Increases
An aqueous solution has a hydroxyl concentration of 1.75 x 10^-7mol/L. Find the concentration of hydrogen ions in this solution.
volatile liquid is placed in a open container for 15 minutes should you expect its mas to
what is first transition series
how scales are formed?
Q. Show Multiplying Quantities Written in Scientific Notation? Multiplying Quantities Written in Scientific Notation Solve the following problem. (2 * 10 14 cm) * (9 *
Aldehyde is a carbonyl compound in which one valency of carbonyl carbon is satisfied by hydrogen atom and other by a alkyl group.
Types of Elimination reactions Elimination reactions are divided into two general categories, (A) α - elimination reactions or 1, 1-elimination reactions. (B) β - elimin
Uses of Starch - Biomolecules (a) Starch are used as the most useful constituent of food as rice, bread, potato and corn-flour, etc. (b) Starch are used in the creation of d
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