Q49.Extraction of copper by smelting uses silica as an additive to remove. (1) Cu2O (2) FeS (3) FeO (4) Cu2S
What This Question Tests
This question requires knowledge of the specific role of silica as an acidic flux in the smelting process of copper to remove basic impurities like iron oxide.
Concepts Tested
📚 NCERT Sections This Tests
2.1 — Arrange The Following Metals In The Order In Which They Displace Each Other
Chemistry Class 11 · Chapter 2
2.1 Arrange the following metals in the order in which they displace each other from the solution of their salts. Al, Cu, Fe, Mg and Zn.
4.14 — Describe The Preparation Of Potassium Dichromate From Iron Chromite Ore.
Chemistry Class 11 · Chapter 4
4.14 Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate?
5.14 — What Is The Coordination Entity Formed When Excess Of Aqueous Kcn Is
Chemistry Class 11 · Chapter 5
5.14 What is the coordination entity formed when excess of aqueous KCN is added to an aqueous solution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H2S(g) is passed through this solution?
📋 Question Details
- Chapter
- Metallurgy
- Topic
- Extraction of Copper
- Year
- 2016
- Shift
- 10 Apr Online
- Q Number
- Q49
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 6: General Principles and Processes of Isolation of Elements
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