MCQ
Which of the oxide groups among the following cannot be reduced by carbon?
- A$Cu_2O, SnO_2$
- ✓$CaO, K_2O$
- C$PbO, Fe_2O_4$
- D$Fe_2O_3, ZnO$
✓
Answer
Correct option: B.
$CaO, K_2O$
b
$Ca$ and $K$ are strong reducing agents, hence their oxides can not be reduced with carbon.
$Ca$ and $K$ are strong reducing agents, hence their oxides can not be reduced with carbon.
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