MetallurgyMedium
Question
Hydrogen gas will not reduce :
Options
A.heated cupric oxide
B.heated ferric oxide
C.heated stannic oxide
D.heated aluminium oxide
Solution
Cupric oxide is reduced as copper is less electropositiv than hydrogen en. Fe3+ and Sn4+ are reduced by hydrogen to Fe2+ and Sn2+ respectively. Al is highly electropositive and so H can,t reduce it .
Create a free account to view solution
View Solution FreeMore Metallurgy Questions
Froth floatation process for concentration of ores is an illustration of the practical application of:...Refractory materials are generally used in furnaces because...During electrolytic reduction of alumina, two auxiliary electrolytes X and Y are added to increase the electrical conduc...Which of th following statement is correct about ionization potential ?...Which one of the following ores is best concentrated by froth - floatation method?...