Q49.Which of the following metals can be extracted through alkali leaching technique? (1) Sn (2) Pb (3) Au (4) Cu JEE Main 2023 (08 Apr Shift 1) JEE Main Previous Year Paper
What This Question Tests
This question tests the knowledge of specific metallurgical extraction methods, particularly identifying which metal is extracted using the alkali leaching technique.
Concepts Tested
Formulas Used
4Au(s) + 8CN-(aq) + 2H2O(aq) + O2(g) -> 4[Au(CN)2]-(aq) + 4OH-(aq)
📚 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.
5.27 — Discuss Briefly Giving An Example In Each Case The Role Of Coordination
Chemistry Class 11 · Chapter 5
5.27 Discuss briefly giving an example in each case the role of coordination compounds in: (i) biological systems (iii) analytical chemistry (ii) medicinal chemistry and (iv) extraction/metallurgy of metals.
2.2 — Given The Standard Electrode Potentials,
Chemistry Class 11 · Chapter 2
2.2 Given the standard electrode potentials, K+/K = –2.93V, Ag+/Ag = 0.80V, Hg2+/Hg = 0.79V Mg2+/Mg = –2.37 V, Cr3+/Cr = – 0.74V Arrange these metals in their increasing order of reducing power.
📋 Question Details
- Chapter
- Metallurgy
- Topic
- Leaching methods in metallurgy
- Year
- 2023
- Shift
- 08 Apr Shift 1
- Q Number
- Q49
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 6: General Principles and Processes of Isolation of Elements
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