Chapter 6 of 16
Syllabus
Redox Reactions — Syllabus
Maharashtra Board · Class 11 · Chemistry
What Redox Reactions covers in Maharashtra Board Class 11 Chemistry: 4 topics, for the 2026-27 session. Topics include Classical Concepts of Redox.
42 questions20 flashcards2 formulas & key relations5 concepts
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4 Topics · Maharashtra Board Class 11 Chemistry · 2026-27
Topics in Redox Reactions
1
Classical Concepts of Redox Reactions
- Oxidation originally meant combination with oxygen: C + O₂ → CO₂
- Reduction originally meant removal of oxygen: Fe₂O₃ + 3C → 4Fe + 3CO₂
- Modern definition expanded to include hydrogen transfer and electron transfer
2
Oxidation Number and Rules
- Oxidation number represents the charge an atom would have if electrons were completely transferred
- Free elements have oxidation number zero: H₂, O₂, Na, etc.
- Monoatomic ions have oxidation number equal to their charge
3
Electron Transfer Theory of Redox
- Redox reactions involve electron transfer between species
- Oxidation = loss of electrons (LEO - Lose Electrons Oxidation)
- Reduction = gain of electrons (GER - Gain Electrons Reduction)
4
Balancing Redox Equations - Oxidation Number Method
- Step 1: Identify atoms with changing oxidation numbers
- Step 2: Calculate increase and decrease in oxidation numbers
- Step 3: Balance increase and decrease by using appropriate coefficients
Key Concepts
Oxidation is the addition of oxygenOxidation is the loss of electronsSystematic rules to assign oxidation statesOxidizing agent (oxidant) causes oxidationTwo methods
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What are the important topics in Redox Reactions for Maharashtra Board Class 11 Chemistry?
Key topics in Redox Reactions include Classical Concepts of Redox Reactions, Oxidation Number and Rules, Electron Transfer Theory of Redox, Balancing Redox Equations - Oxidation Number Method. Study these first, then practise questions on each for Class 11 exams.
How should I revise Redox Reactions for Class 11 exams?
Learn the core ideas first, then work through the 42 practice questions on Redox Reactions. Revise definitions regularly and use flashcards for quick recall before the exam.
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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