JEE Main 2022 · 28 Jun · Shift 2 · Chemistry Q67

ChemistrySingle correct+4 / -1Question 67 of 90

In the metallurgical extraction of copper, following reaction is used :

$\mathrm{FeO+SiO_2\rightarrow FeSiO_3}$

FeO and $\mathrm{FeSiO_3}$ respectively are.

gangue and flux.

flux and slag.

slag and flux.

gangue and slag.

Answer and worked solution

Official answer: D

FeO is the impurity (gangue) removed by the silica flux; $\mathrm{FeSiO_3}$ is the slag.

(D)

Topics:Extraction of specific metals

JEE Main 2022 · 28 Jun · Shift 2, Chemistry question 67