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What is Calcination? - Chemistry

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प्रश्न

What is calcination?

उत्तर

Calcination is a process in which the ore is heated to a high temperature below its melting point in the absence of air or in a limited supply of air.

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संबंधित प्रश्न

Explain calcination with reactions.


Define Hydrometallurgy?


What is the process in which concentrated ore is reduced to the corresponding metal by heating at high temperature with a reducing agent?

(a) Polling                      

(b) Pyrometallurgy

(c) Hydrometallurgy

(d) Calcination


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What is the role of zinc metal in the extraction of silver ?


Name the processes from which chlorine is obtained as a by-product. What will happen if an aqueous solution of NaCl is subjected to electrolysis?


Which one of the following oxidation state of Manganese is unstable?

(a) + 2

(b) + 4

(c) + 5

(d) + 7


Complete the given chemical equations 

`F_2 + 2Cl^(-)`


What happens when HCl is added to MnO2? Write the equations involved


What is the action of carbon on the following metal oxides:

Fe2O3 in the blast furnace


What is the action of carbon on the following metal oxides :

ZnO in the vertical retort furnace


An element X (molar mass = 60 g mol−1) has a density of 6.23 g cm−3. Identify the type of cubic unit cell, if the edge length of the unit cell is 4 ✕ 10−8 cm.


Which metal is also found in sea beds?


In the extraction of chlorine by electrolysis of brine ______.


Which of the following reactions is an example of autoreduction?


Brine is electrolysed by using inert electrodes. The reaction at anode is ______.


Why are sulphide ores converted to oxide before reduction?


Which of the following reactions is an example of auto reduction?


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