Question

Which of the following metal's oxide can be reduced by $Fe$ as reducing agent at temperature $T_1$?

• A. $Zr$
• B. $Ca$
• C. $Mg$
• D. None of these

Answer 1

The correct option is A $Zr$

The oxide of $Zr$ can be reduced by $Fe$ as reducing agent at temperature $T_1$. This is because, the $\Delta G^0$ value for the formation of $F{e}_2{O}_3$ is more negative than that of $ZrO$. Thus, $F{e}_2{O}_3$ is more stable than $ZrO$