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Chemistry
Chemistry
Problem
Aluminium is used as a reducing agent in the reduction of : a.
Cr
2
O
3
\text{Cr}_2\text{O}_3
Cr
2
O
3
b.
SnO
2
\text{SnO}_2
SnO
2
c.
ZnO
\text{ZnO}
ZnO
d.
HgO
\text{HgO}
HgO
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