MetallurgyHard
Question
Consider the following statements :
S1 : Extraction of zinc from sphalerite involves roasting followed by carbon reduction.
S2 : In bessemer convertor, along with copper FeSiO3 is also obtained.
S3 : In extraction of lead, CaO prevents the formation of PbSiO3.
S4 : Copper is extracted by hydrometallurgy from low grade ores and scraps.
and arrange in the order of true/false.
S1 : Extraction of zinc from sphalerite involves roasting followed by carbon reduction.
S2 : In bessemer convertor, along with copper FeSiO3 is also obtained.
S3 : In extraction of lead, CaO prevents the formation of PbSiO3.
S4 : Copper is extracted by hydrometallurgy from low grade ores and scraps.
and arrange in the order of true/false.
Options
A.T T T F
B.F T T F
C.T T T T
D.F F F T
Solution
S1 : 2ZnS (sphalerite) + 3O2 
2ZnO + 2SO2 ; ZnO + C
Zn + CO
S2 : 2CuFeS2 + O2 → Cu2S + 2FeS + SO2
2Cu2S + 3O2 → 2Cu2O + 2SO2 ; 2FeS + 3O2 → 2FeO + 2SO2 ;
FeO + SiO2 → FeSiO3 ; Cu2S + 2Cu2O → 6Cu + SO2
S3 : PbSiO3 + CaO → CaSiO3 + PbO
S4 : 2Cu2O + 4H2SO4 + O2 → 4CuSO4 + 4H2O
Cu2S + 4H2SO4 + 4O2 → 4CuSO4 + 4H2O + 2SO2 ↑
Cu2+ (aq) + H2(g) → Cu(s) + 2H+ (aq)
2ZnO + 2SO2 ; ZnO + CZn + COS2 : 2CuFeS2 + O2 → Cu2S + 2FeS + SO2
2Cu2S + 3O2 → 2Cu2O + 2SO2 ; 2FeS + 3O2 → 2FeO + 2SO2 ;
FeO + SiO2 → FeSiO3 ; Cu2S + 2Cu2O → 6Cu + SO2
S3 : PbSiO3 + CaO → CaSiO3 + PbO
S4 : 2Cu2O + 4H2SO4 + O2 → 4CuSO4 + 4H2O
Cu2S + 4H2SO4 + 4O2 → 4CuSO4 + 4H2O + 2SO2 ↑
Cu2+ (aq) + H2(g) → Cu(s) + 2H+ (aq)
Create a free account to view solution
View Solution FreeMore Metallurgy Questions
Which of the following statement is correct...Poling process is used for :...Gravity separation process may be used for the concentration of :...Match the reactions taking place in blast furnace with temperature - range of operations Column - I Column - II(a) C + C...Match column I with column II and select the correct answer using the codes given below the lists : Column I Column II I...