KCET SERIES Chemistry
Oxidation Number
6 previous year questions.
Volume: 6 Ques
Yield: Medium
High-Yield Trend
1
2026 1
2025 1
2023 1
2020 1
2019 1
2009 Chapter Questions 6 MCQs
01
PYQ 2009
easy
chemistry ID: kcet-200
The oxidation state of in the brown ring complex : is
1
2
2
1
3
3
4
0
02
PYQ 2019
medium
chemistry ID: kcet-201
Oxidation state of copper is +1 in
1
Azurite
2
Chalcopyrite
3
Malachite
4
Cuprite
03
PYQ 2020
easy
chemistry ID: kcet-202
The oxidation number of nitrogen atoms in are
1
+5, +5
2
-3, +5
3
+3, -5
4
-3, -3
04
PYQ 2023
medium
chemistry ID: kcet-202
What is the oxidation number of S in H2S2O8 ?
1
+5
2
+4
3
+7
4
+6
05
PYQ 2025
medium
chemistry ID: kcet-202
The group reagent NH Cl (s) and aqueous NH , will precipitate which of the following ion
1
Al
2
Ba
3
Ca
4
NH
06
PYQ 2026
medium
chemistry ID: kcet-202
Given below are two statements.
Statement I : In H O , each oxygen atom is assigned an oxidation number of -1, In RbO , each oxygen atom is assigned an oxidation number of - .
Statement II : Representation of HAuCl and MnO in stock notation is HAu(III)Cl and Mn(II)O , respectively.
Examine the above statements and choose the correct answer.
Statement I : In H O , each oxygen atom is assigned an oxidation number of -1, In RbO , each oxygen atom is assigned an oxidation number of - .
Statement II : Representation of HAuCl and MnO in stock notation is HAu(III)Cl and Mn(II)O , respectively.
Examine the above statements and choose the correct answer.
1
Both Statement I and Statement II are correct
2
Both Statement I and Statement II are incorrect
3
Statement I is correct but Statement II is incorrect
4
Statement I is incorrect but Statement II is correct