Extraction of copper by smelting uses silica as an additive to remove :
← JEE Main 2016 · 10 Apr · Shift 1
ChemistrySingle correct+4 / -1Question 42 of 90
JEE Main 2016 · 10 Apr · Shift 1, Chemistry question 42
Answer and worked solution
Official answer: B
Silica combines with FeO to form the slag .