Redox Reactions Sample Questions for Class 11
Question 1
What is the oxidation number of Pt in [PtCl_6]^(2-)?
A. +4
B. +3
C. +2
D. +1
Question 2
What is the oxidation number of chlorine in KClO_4?
A. +5
B. +7
C. -8
D. +1
Question 3
What is the oxidation number of chromium in calcium chromate?
A. +2
B. -2
C. -8
D. +6
Question 4
In "CuCl"_2, chlorine's oxidation number equals
A. -1.
B. -2.
C. -3.
D. -4.
Question 5
What is the oxidation number of Nitrogen (N) in HNO_3?
A. +5
B. +4
C. +3
D. +2