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प्रश्न
What flux would you use to remove the following impurity?
SiO2
अति संक्षिप्त उत्तर
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उत्तर
For SiO2 (silica impurity), the flux used is CaO (lime/quicklime).
\[\ce{CaO + SiO2 -> CaSiO3}\]
Thus, basic flux (CaO) is used to remove acidic impurity (SiO2) by forming fusible slag.
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अध्याय 6: General Principles and Processes of Isolation of Elements - REVIEW EXERCISES [पृष्ठ ३५४]
