Skip to content
Philoid
Browse Saved
Back to chapter
Chemistry
6. General Principle and Processes of Isolation of Elements
Home · Class 12 · Chemistry · Chemistry - Exemplar · 6. General Principle and Processes of Isolation of Elements
Prev
Next
Q30 of 52 Page 82

How is copper extracted from low grade copper ores?

Copper is extracted by hydrometallurgy from low grade copper ores. Cu is treated with scrap iron or H2. It is leached out with acid.


Cu2+(aq) + H2(g) → Cu(s) + 2H+(aq)


More from this chapter

All 52 →
28

At temperatures above 1073K coke can be used to reduce FeO to Fe. How can you justify this reduction with Ellingham diagram?

29

Wrought iron is the purest form of iron. Write a reaction used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?

33

How do we separate two sulphide ores by Froth Floatation Method? Explain with an example.

34

The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.

Questions · 52
6. General Principle and Processes of Isolation of Elements
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 29 30 33 34 35 36 37 38 39 40 41 42 43 44 Note 45 46 47 48 49 50 51 52 53 54 55
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved