Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyExtraction of MetalsMedium2 minQB
ChemistryMediumnumerical
Passage / Comprehension
Chief ore of zinc is zinc blende (ZnS). The ore is concentrated by the froth flotation process and then heated in air to convert ZnS to ZnO.
2ZnS + 3O2 → 2ZnO + 2SO2 .............(i)
(i) The ZnO thus formed is treated with dilute sulphuric acid :
ZnO + H2SO4 → ZnSO4 + H2O........ ..(ii)
On electrolysis of zinc sulphate, zinc metal is produced :
ZnSO4 + H2O → Zn + H2SO4+ O2 ........ (iii)
What mass of Zn in kg will be obtained from an ore containing 225 kg of ZnS ?
(Zn = 65 , S = 32, O = 16)
Answer:
150.76
Solution:
The correct answer is
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Extraction of Metals
⏱ 2mℹ️ Source: QB
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