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General Principles and processes of Isolation of Elements
hard
Among the following groups of oxides, the group containing oxides that cannot be reduced by $C$ to give the respective metal is
A
$CaO$ and $K_2O$
B
$Fe_2O_3$ and $ZnO$
C
$Cu_2O$ and $SnO_2$
D
$PbO$ and $Pb_3O_4$
Solution
Oxides of highly reactive metals can't be reduced $b$ Carbon.
Among the following pairs, the pair which consists of more reactive oxides are $CaO$ and $K _2 O$
Standard 12
Chemistry
