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When a metal is to be extracted from its ore and the gangue associated with the silica, then

$ (a)\;\text{An acidic flux is needed } \\(b)\;\text{A basic flux is needed } \\(c)\;\text{ Both acidic and basic fluxes are needed } \\ (d)\;\text{ Neither of them is needed } $

2 Answers

When a metal is to be extracted from its ore and the gangue associated with the silica, then a basic flux is needed
Hence b is the correct answer.
answered Mar 17, 2014 by meena.p
 
Both acidic flux and basic flux
answered Jul 6, 2014 by ramareddy629
 

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