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Oxidation State Questions

Practice 10 Oxidation State questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

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10
Total Questions
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3
Easy
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7
Medium
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0
Hard
Practice by Exam:Chemistry(7)Mathematics and Science(2)CHEMISTRY(1)

About Oxidation State — practice questions, PYQs & concepts

Oxidation State is a frequently-tested topic on Chemistry, Mathematics and Science, CHEMISTRY. ExamTest.live currently lists 10 Oxidation State questions spanning previous-year papers from 2017 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year — every answer key is free, no sign-up required.

Oxidation State weight in competitive exams

Across our Oxidation State question bank, the largest sources are Chemistry (7), Mathematics and Science (2) and CHEMISTRY (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 3 easy Oxidation State questions are available — build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right — the explanation often surfaces a faster approach you can reuse.

All Oxidation State Questions(1–10 of 10)

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Q1easymcqChemistryAIEEE2026
0% accuracy
The oxidation state of in is:
Q2mediummcqCHEMISTRYNEET 20192026
The oxidation state of in is:
Q3mediummcqChemistryAIEEE2026
The coordination number and the oxidation state of the element ‘E’ in the complex (where ‘en’ is ethylenediamine) are, respectively:
Q4mediummcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2017
In which of the following compounds does oxygen have an oxidation number of +2?
Q5mediummcqMathematics and ScienceUPTET Paper 2 (Maths & Science)2017
In which of the following compounds, the oxidation number of oxygen is ?
Q6easymcqChemistryChemistry
0% accuracy
Consider the following compounds: , and . The oxidation states of the underlined elements in them are, respectively:
Q7easymcqChemistryChemistry
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
Q8mediummcqChemistryChemistry
Oxidation states of in , are respectively:
Q9mediummcqChemistryChemistry
In which of the following compounds, nitrogen exhibits highest oxidation state?
Q10mediummcqChemistryChemistry
A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

Frequently Asked Questions

How many Oxidation State questions are on ExamTest.live?▼
We have 10 Oxidation State questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Oxidation State MCQs free?▼
Yes. All Oxidation State questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Oxidation State questions?▼
Oxidation State questions are commonly asked in Chemistry, Mathematics and Science, CHEMISTRY. You can filter by exam using the links above.
How do I practice Oxidation State questions effectively?▼
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.