Easy MCQ +4 / -1 PYQ · JEE Mains 2023

In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:

  1. A remove $\mathrm{FeO}$ as $\mathrm{FeSiO}_{3}$ Correct answer
  2. B remove calcium as $\mathrm{CaSiO}_{3}$
  3. C decrease the temperature needed for roasting of $\mathrm{Cu}_{2} \mathrm{~S}$
  4. D separate $\mathrm{CuO}$ as $\mathrm{CuSiO}_{3}$

Solution

<p>$$\mathrm{\mathop {FeO}\limits_{Basic} + \mathop {Si{O_2}}\limits_{Acidic} \buildrel {} \over \longrightarrow \mathop {FeSi{O_3}}\limits_{(Slag)}}$$</p>

About this question

Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family

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