Class 11 Chemistry — Chapter 7: Redox Reactions
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Practise Class 11 Chemistry Chapter 7, "Redox Reactions", with 90 NCERT-aligned multiple-choice questions. The set is split into 30 Easy, 30 Medium and 30 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
"Redox Reactions" is one of the chapters where reactions, named concepts, and balanced numerical work really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Redox Reactions, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Chemistry mastery score. A few sample questions are shown below; sign in free to practise all 90.
Key concepts: Redox Reactions (Class 11 Chemistry)
This chapter covers oxidation and reduction, oxidation numbers, balancing redox reactions, and redox in terms of electrode processes.
- Oxidation & reduction
- Oxidation is loss of electrons (increase in oxidation number); reduction is gain of electrons (decrease).
- Oxidation number
- A bookkeeping charge assigned by rules; used to identify what is oxidised/reduced.
- Oxidising & reducing agents
- The oxidising agent is reduced (gains electrons); the reducing agent is oxidised (loses electrons).
- Balancing redox
- By the oxidation-number method or the ion-electron (half-reaction) method, balancing atoms and charge.
- Redox & electrodes
- Redox reactions underlie electrochemical cells; electrode potentials rank oxidising/reducing strength.
💡 Exam tips for Redox Reactions
- Remember 'OIL RIG': Oxidation Is Loss, Reduction Is Gain (of electrons).
- The oxidising agent is itself reduced, and the reducing agent is itself oxidised.
Sample questions
Oxidation state of Ca in CaO:
Group 2 metal — always +2.
Oxidation number of S in H₂SO₄:
2(+1) + S + 4(−2) = 0 ⇒ S = +6.
Disproportionation reaction:
e.g., 2H₂O₂ → 2H₂O + O₂.
Redox Reactions — FAQs
What are the key concepts in Class 11 Chemistry Redox Reactions?+
This chapter covers oxidation and reduction, oxidation numbers, balancing redox reactions, and redox in terms of electrode processes. Key ideas include Oxidation & reduction, Oxidation number, Oxidising & reducing agents, Balancing redox, Redox & electrodes.
What does Class 11 Chemistry Chapter 7 (Redox Reactions) cover on XamBaaz?+
It covers 90 NCERT-aligned MCQs on "Redox Reactions" — 30 Easy, 30 Medium and 30 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams, JEE Main, JEE Advanced and NEET UG.
Are these "Redox Reactions" questions free to practise?+
Yes — sign in with Google to practise "Redox Reactions" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Redox Reactions" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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