Oxidation Number, Rules for Assigning Oxidation Number NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Oxidation Number, Rules for Assigning Oxidation Number MCQ Questions


7.
In Cr₂O₇²⁻, the oxidation number of Cr is
A.
3
B.
6
C.
7
D.
2
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ANSWER :
B. 6
8.
The oxidation state of nitrogen in NH₄⁺ is
A.
-3
B.
3
C.
1
D.
0
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ANSWER :
A. -3
9.
In Fe₃O₄, average oxidation number of Fe is
A.
2.5
B.
2
C.
3
D.
1
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ANSWER :
A. 2.5
10.
In HNO₃, oxidation number of N is
A.
3
B.
5
C.
1
D.
2
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ANSWER :
B. 5
11.
In KClO₄, oxidation number of Cl is
A.
7
B.
5
C.
3
D.
-1
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ANSWER :
A. 7
12.
In CO₂, oxidation state of carbon is
A.
2
B.
4
C.
6
D.
0
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ANSWER :
B. 4