Choose the correct code regarding the Roastin | vedclass

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(B) Roasting is a metallurgical process in which an ore is heated in a regular supply of air at a temperature below the melting point of the metal.$I$

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$I, II$ and $IV$

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(B) Roasting is a metallurgical process in which an ore is heated in a regular supply of air at a temperature below the melting point of the metal.$I$. Roasting is used to convert sulfide ores into oxides. This statement is correct.$II$. Roasting is generally an exothermic process because the oxidation of sulfide ores releases a significant amount of heat. This statement is correct.$III$. Heating hydrated oxides and oxysalt ores to remove moisture and volatile impurities is known as Calcination,not Roasting. This statement is incorrect.$IV$. Roasting is performed after the concentration of the ore to convert the concentrated ore into a form suitable for reduction. This statement is correct.Therefore,statements $I, II,$ and $IV$ are correct.

Choose the correct code regarding the Roasting process.
$I$. It is the process of heating ore in air to obtain the oxide.
$II$. It is an exothermic process.
$III$. It is used for hydrated oxide and oxysalt ore.
$IV$. It is used after the concentration of ore.

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Choose the correct code regarding the Roasting process.$I$. It is the process of heating ore in air to obtain the oxide.$II$. It is an exothermic process.$III$. It is used for hydrated oxide and oxysalt ore.$IV$. It is used after the concentration of ore.