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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 atom of the element having atomic number 14 should have: (1) One unpaired electron (2) Two unpaired electrons (3) Three unpaired electrons (4) Four unpaired electr
Atomic spectroscopy: Atomic spectroscopy is the oldest instrumental method of elemental analysis. The origin of these methods dates back to the times of Bunsen and Kirchhoff i
Explain the un-ionized form of vanillin It is the un-ionized form of vanillin that has the typical odor. In NaOH solution, the phenol group ofvanillin ionizes to its conjugate
A 200g golf ball is moving with a speed of 5 m per hour. The associated wave length (h = 6.625 x 10 -34 J sec)is: (1) 10- 1 0 m (2) 10 -20 m
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
The outer electronic structure 3s 2 3p 5 is possessed by: (1) Cl (2) O (3) Ar (4) Br ans: Cl
what are the properties of d-block elements?
general methods of preparation of ethanol
i need help reading this IR chart to figure out what the compound is
Q. What are the Chemical Properties of Ammonia? Ans. Combustion: Ammonia does not burn in air but will burn in pure oxygen to form nitrogen and water vapor. 4NH 3 (g) +
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