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Direction (Q. Nos. 24-28) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).
C
r
O
3
CrO_3
C
r
O
3
changes to
C
r
O
5
CrO_5
C
r
O
5
in presence of ether and
H
2
O
2
H_2O_2
H
2
O
2
. What is change in oxidation number of Cr atom?
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