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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 do you mean by Mixtures of Matter? A mixture is a mixture of two or more pure substances in which each substance retains its individual properties. Concrete mainly ro
advantages of pseduo order reaction??
The maximum number of electrons that can be accommodated in the M th shell is: (1) 2 (2) 8 (3) 18 (4) 32 Ans: 18
what is chemistry
Q. Study of Elements of group 16? We shall discuss Group 16 elements, viz., oxygen, sulphur, selenium, tellurium and polonium. These elements are called chalcogens or the ore f
Q. How can we obtain Pure alumina? Pure alumina is obtained from bauxite ore. Powdered bauxite mineral is heated in a concentrated solution of sodium hydroxide under pressure w
The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is: (1) 17 (2) 37 (3)2 (4)38 Ans: 17
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how to select a parent chain
resonating structure of p-nitro aniline
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