Welcome to the Oxidation Number Or State MDCAT MCQs with Answers. In this post, we have shared Oxidation Number Or State Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Chemistry offers a chance to enhance your knowledge regarding Oxidation Number Or State MCQs in this MDCAT Online Test.
The oxidation number of oxygen in most of its compounds is:
a) +2
b) +1
c) -1
d) -2
The oxidation number of hydrogen in most of its compounds is:
a) +1
b) -1
c) 0
d) +2
In a neutral molecule, the sum of oxidation numbers of all atoms is:
a) +1
b) -1
c) 0
d) 1
In a polyatomic ion, the sum of oxidation numbers of all atoms equals:
a) The ion’s charge
b) 0
c) +1
d) -1
The oxidation number of chlorine in NaCl is:
a) +1
b) -1
c) 0
d) +2
The oxidation state of sulfur in H₂SO₄ is:
a) +4
b) +6
c) -2
d) 0
The oxidation number of nitrogen in NH₃ is:
a) +3
b) -3
c) 0
d) +5
In the compound H₂O₂, the oxidation number of oxygen is:
a) -2
b) -1
c) 0
d) +1
The oxidation state of potassium in K₂O is:
a) +1
b) +2
c) -1
d) -2
In the compound KClO₃, the oxidation state of chlorine is:
a) +1
b) +3
c) +5
d) +7
The oxidation number of carbon in CH₄ is:
a) +4
b) -4
c) 0
d) +2
The oxidation state of iodine in HI is:
a) +1
b) -1
c) 0
d) +2
In H₂SO₄, the oxidation state of hydrogen is:
a) +1
b) -1
c) 0
d) +2
The oxidation number of manganese in KMnO₄ is:
a) +2
b) +4
c) +6
d) +7
In the ion NO₃⁻, the oxidation state of nitrogen is:
a) +1
b) +3
c) +5
d) +7
The oxidation state of phosphorus in H₃PO₄ is:
a) +3
b) +5
c) +1
d) +7
The oxidation number of zinc in ZnSO₄ is:
a) +2
b) +1
c) -2
d) -1
In the compound Fe₂O₃, the oxidation state of iron is:
a) +2
b) +3
c) +4
d) +6
The oxidation number of chromium in K₂Cr₂O₇ is:
a) +2
b) +3
c) +6
d) +7
In the compound CO₂, the oxidation state of carbon is:
a) +2
b) +4
c) +1
d) 0
The oxidation state of barium in BaSO₄ is:
a) +2
b) +4
c) +6
d) +1
In the ion MnO₄⁻, the oxidation state of manganese is:
a) +2
b) +4
c) +6
d) +7
The oxidation number of sulfur in SO₂ is:
a) +2
b) +4
c) +6
d) +8
The oxidation state of calcium in CaCl₂ is:
a) +1
b) +2
c) +3
d) 0
In the compound HClO₄, the oxidation state of chlorine is:
a) +1
b) +3
c) +5
d) +7
The oxidation number of gold in AuCl₃ is:
a) +1
b) +2
c) +3
d) +4
In Na₂S, the oxidation state of sulfur is:
a) -2
b) +2
c) +4
d) +6
The oxidation state of aluminum in Al₂O₃ is:
a) +1
b) +2
c) +3
d) +6
The oxidation number of nitrogen in NO₂ is:
a) +2
b) +3
c) +4
d) +5
The oxidation state of copper in CuSO₄ is:
a) +1
b) +2
c) +3
d) +4
The oxidation number of chlorine in Cl₂ is:
a) +1
b) +2
c) +3
d) 0
In H₂S, the oxidation state of sulfur is:
a) -2
b) +2
c) +4
d) +6
The oxidation state of iodine in ICl is:
a) -1
b) +1
c) +2
d) +3
In the ion CrO₄²⁻, the oxidation state of chromium is:
a) +2
b) +3
c) +4
d) +6
The oxidation state of manganese in MnSO₄ is:
a) +2
b) +3
c) +4
d) +7
The oxidation number of carbon in CO is:
a) +1
b) +2
c) 0
d) -1
In NaNO₃, the oxidation state of nitrogen is:
a) +1
b) +2
c) +3
d) +5
The oxidation state of tungsten in WO₃ is:
a) +2
b) +4
c) +6
d) +8
In the ion SO₃²⁻, the oxidation state of sulfur is:
a) +2
b) +4
c) +6
d) +8
The oxidation state of zinc in ZnCl₂ is:
a) +1
b) +2
c) +3
d) 0
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