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The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite Na3AlF6 is:

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Important Questions on General Principles and Processes of Isolation of Elements

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IMPORTANT
Copper matte is extracted from copper pyrites ore by heating it in blast furnace. The method is based on the principle that:
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If red bauxite contains chief impurity of ferric oxide but contains some amount of SiO2 is subjected to Baeyer's process, then select the correct reason for SiO2
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Extraction of Ag from sulfide ore and removal of unreacted silver bromide from photographic plate involves complexes
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In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu2O with
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Which of the following diagrams is correctly related to different steps involved in the extraction of Zn from zinc blende ore?
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JEE Main
IMPORTANT
Which of the following reactions is/are the main reaction during partial roasting of chalcopyrite in a blast furnace?