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Oxidation Reduction and Redox Reactions CBSE Class 10 MCQ & Practice Questions

Practice Oxidation Reduction and Redox Reactions MCQs for CBSE Class 10 Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.

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Oxidation Reduction and Redox Reactions Revision Guide for CBSE Class 10 Chemistry

Redox Reactions focuses on electron transfer and oxidation-state changes. It supports electrochemistry, inorganic reactions and many analytical calculations.

For CBSE Class 10 Chemistry, practise oxidation-number rules, identifying oxidising and reducing agents, balancing redox equations and equivalent concepts where they are part of the syllabus.

Important Topics

  • Oxidation number rules
  • Oxidation and reduction
  • Oxidising and reducing agents
  • Balancing by oxidation-number method
  • Ion-electron method
  • Redox stoichiometry

Important Formulae & Relationships

  • Increase in oxidation number = oxidation
  • Decrease in oxidation number = reduction
  • Total electrons lost = total electrons gained in a balanced redox process

Use formulas only after checking the required units, sign convention and assumptions for the question.

What to practise in Oxidation Reduction and Redox Reactions

Concept Revision

Revise definitions, principles, equations, trends and core ideas from Oxidation Reduction and Redox Reactions before attempting MCQs.

Exam-style MCQs

Use chapter-focused multiple-choice practice to improve accuracy, recall and application for CBSE Class 10 Chemistry.

Performance Practice

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Top 5 Oxidation Reduction and Redox Reactions MCQs with Answers

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CBSE Class 10 Chemistry · Oxidation Reduction and Redox Reactions · Very Very Hard

1. Which statement is essential when solving a question on Oxidation Reduction and Redox Reactions?

  • A. All reactions are reversible
  • B. Atoms and charge must be conserved in chemical equations
  • C. Atoms may disappear
  • D. Balanced equations are unnecessary
Answer: B
Explanation: Chemical equations must obey conservation of atoms and charge.

CBSE Class 10 Chemistry · Oxidation Reduction and Redox Reactions · Very Very Hard

2. A correctly written reaction related to Oxidation Reduction and Redox Reactions should be:

  • A. Balanced
  • B. Unbalanced
  • C. Balanced only for gases
  • D. Balanced only for acids
Answer: A
Explanation: A chemical equation is balanced to obey conservation of mass.

CBSE Class 10 Chemistry · Oxidation Reduction and Redox Reactions · Very Very Hard

3. Which approach best answers an application question on Oxidation Reduction and Redox Reactions?

  • A. Use colour alone in every case
  • B. Ignore reaction conditions
  • C. Assume every substance behaves identically
  • D. Use the characteristic property or reaction involved
Answer: D
Explanation: Characteristic properties and stated reaction conditions determine the answer.

CBSE Class 10 Chemistry · Oxidation Reduction and Redox Reactions · Very Very Hard

4. In a reaction involving Oxidation Reduction and Redox Reactions, evidence of chemical change may include:

  • A. Only stirring
  • B. Only change of shape
  • C. Gas evolution, precipitate, colour or temperature change as applicable
  • D. Only change of container
Answer: C
Explanation: Chemical reactions may show gas evolution, precipitate formation, colour or temperature change.

CBSE Class 10 Chemistry · Oxidation Reduction and Redox Reactions · Very Very Hard

5. Which is the safest rule for a CBSE Class X chemistry problem on Oxidation Reduction and Redox Reactions?

  • A. Change subscripts to balance atoms
  • B. Apply the relevant concept and verify the balanced equation
  • C. Memorise an unrelated equation
  • D. Ignore products
Answer: B
Explanation: Subscripts must not be changed to balance equations; use coefficients and chemistry concepts.

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Oxidation Reduction and Redox Reactions Practice Tests

Oxidation Reduction and Redox Reactions Frequently Asked Questions

How do I identify the oxidising agent?

The oxidising agent causes another species to be oxidised and is itself reduced.

What is the safest way to balance redox equations?

Use either the oxidation-number method or ion-electron method systematically, then verify both atom balance and total charge.

Why is oxidation state useful?

It provides a bookkeeping method for identifying electron-transfer changes even when electrons do not appear explicitly in the written equation.

Continue with another chapter to build connected concepts and strengthen your overall Chemistry preparation.

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