Which of the following reactions is suitable for concentrating ore by the leaching process?
- A$2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$
- B$Fe_3O_4 + CO \rightarrow 3FeO + CO_2$
- C$Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$
- D$Al_2O_3 + 6Mg \rightarrow 6MgO + 4Al$
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Similar Questions
Which of the following methods is used to separate wolframite and stannic oxide present in cassiterite?
Which soluble substances are obtained when bauxite is treated with a solution of $NaOH$ at a temperature of $473 - 523 \ K$ and a pressure of $35 - 36 \ bar$?
Medium
View SolutionGiven below are two statements :-
Statement $I$: In froth floatation method,a rotating paddle agitates the mixture to draw air into it.
Statement $II$: Iron pyrites are generally avoided for the extraction of iron due to environmental reasons.
In the light of the above statements,choose the correct answer from the options given below :-
Statement $I$: In froth floatation method,a rotating paddle agitates the mixture to draw air into it.
Statement $II$: Iron pyrites are generally avoided for the extraction of iron due to environmental reasons.
In the light of the above statements,choose the correct answer from the options given below :-
Which method is used for the concentration of iron pyrites ore?
Easy
View SolutionChemical leaching is useful in the concentration of
Easy
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