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JEE MainChemistryModerateInorganic Chemistry

Main function of roasting is

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To remove volatile substance.
S_8 + 8O_2 → 8SO_2 ↑; P_4 + 5O_2 → P_4 O_10 ↑

4 As + 3O_2 → 2AS_2 O_3 ↑

Source: Grass-G / CH-12 Chemistry Paper 2 Nov..docx

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