Which of the following reactions is a part of the Bayer's process for the extraction of aluminum?
- A$Al_2O_3 + 2NaOH \rightarrow 2NaAlO_2 + H_2O$
- B$Fe_2O_3 + 2Al \rightarrow 2Fe + Al_2O_3$
- C$AlN + 3H_2O \rightarrow Al(OH)_3 + NH_3$
- D$Al_2O_3 \cdot 2H_2O + 2Na_2CO_3 \rightarrow 2NaAlO_2 + 2CO_2 + 2H_2O$
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View SolutionFroth flotation method is used to remove impurities from ore because:
Easy
View SolutionThe correct statements regarding the froth floatation method in metallurgy are:
$I$. Used for the purification of sulphide ores
$II$. Used for the roasting of sulphide ores
$III$. It is based on the relative densities of gangue and ore particles
$IV$. It is based on the difference in the wetting properties of gangue and ore particles in frothing agent and water
$I$. Used for the purification of sulphide ores
$II$. Used for the roasting of sulphide ores
$III$. It is based on the relative densities of gangue and ore particles
$IV$. It is based on the difference in the wetting properties of gangue and ore particles in frothing agent and water
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