Advertisements
Advertisements
प्रश्न
Describe the role of the Cryolite in the extraction of aluminium from pure alumina.
उत्तर
(a) It lowers the melting point of bauxite.
(b) It increases the conductivity of the electrolyte.
APPEARS IN
संबंधित प्रश्न
Out of C and CO, which is a better reducing agent at the lower temperature range in the blast furnace to extract iron from the oxide ore?
What is the role of limestone in the extraction of iron from its oxides?
Define Leaching.
Why does copper obtained in the extraction from copper pyrites have a blistered appearance?
Which of the following options are correct?
(i) Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.
(ii) In extraction of silver, silver is extracted as cationic complex.
(iii) Nickel is purified by zone refining.
(iv) Zr and Ti are purified by van Arkel method.
Write the chemical reactions involved in the extraction of gold by cyanide process. Also give the role of zinc in the extraction.
Identify a mineral for the major source of boron from the following list?
Extraction of zinc from zinc blende is achieved by:-
When compared to ΔG° for the formation of Al2O3 ΔG° for the formation of Cr2O3 is
The ore that contains both iron and copper is ______.
