Exam-Style Online Test | Class 11 Chemistry: Redox Reactions

Class 11 Chemistry — Chapter 8: Redox Reactions Online Test

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Class 11 Chemistry: Redox Reactions Online Test (Paper 1)

Welcome to Paper 1! This is your foundation to build confidence and get you ready to tackle the challenges ahead.

  • Total Questions: 20
  • Time Allotted: 30 minutes
  • Passing Score: 40%
  • Randomization: No
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

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1 / 20

1. In the reaction , how do you balance the electrons in a full redox reaction involving both oxidation and reduction half-reactions?

2 / 20

2. In the reaction , what is the standard electrode potential of the half-cell?

3 / 20

3. In the cell notation , what does the represent?

4 / 20

4. How are redox reactions related to the generation of electrical energy in a galvanic cell?

5 / 20

5. What is the role of NADH and FADH2 in cellular respiration?

6 / 20

6. What is the main difference between bleaching with chlorine and bleaching with hydrogen peroxide?

7 / 20

7. In cellular respiration, which molecule is the primary electron carrier?

8 / 20

8. In the reaction , how do you balance the equation using the oxidation number method?

9 / 20

9. In the reaction , what type of reaction is this?

10 / 20

10. In the decomposition reaction , what type of reaction is this?

11 / 20

11. In the reaction , how do the oxidation numbers help balance the reaction?

12 / 20

12. In the compound (sulfurous acid), what is the oxidation number of sulfur (S)?

13 / 20

13. Which of the following is a common example of a reducing agent?

14 / 20

14. Which of the following elements undergoes oxidation by electron loss in the reaction ?

15 / 20

15. What was a major issue with defining oxidation and reduction solely based on oxygen and hydrogen?

16 / 20

16. In which type of reaction does oxidation occur due to the loss of hydrogen?

17 / 20

17. In the reaction , what happens to manganese?

18 / 20

18. Which metal can displace copper from a solution of copper sulfate ()?

19 / 20

19. In the reaction , what happens to copper?

20 / 20

20. In the reaction , what is the oxidation number of manganese before and after the reaction?

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Class 11 Chemistry: Redox Reactions Online Test (Paper 2)

Welcome to Paper 2! You’ve mastered the basics, and now it’s time to test your understanding with a more challenging set of questions.

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  • Total Questions: 30
  • Time Allotted: 45 minutes
  • Passing Score: 50%
  • Randomization: Yes
  • Certificate: No
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 30

1. In a galvanic cell with the following half-reactions: and , how would you represent this cell in notation?

2 / 30

2. What is the correctly written pair of half-reactions for the redox of hydrogen peroxide by permanganate in acidic medium?

3 / 30

3. What is the oxidation number of carbon in ?

4 / 30

4. In the reaction , how do the oxidation numbers of chromium change?

5 / 30

5. In the compound (sulfurous acid), what is the oxidation number of sulfur (S)?

6 / 30

6. What is the oxidation state of nitrogen in ?

7 / 30

7. What is the overall balanced equation for the reaction between hydrogen peroxide and chlorine gas in acidic solution?

8 / 30

8. What is the final product of anaerobic respiration in muscles?

9 / 30

9. Which of the following reactions is a combination reaction involving two compounds?

10 / 30

10. Which of the following reactions demonstrates reduction as electron gain?

11 / 30

11. What is the oxidation half-reaction in the reaction between permanganate and oxalate in acidic solution?

12 / 30

12. In the reaction , which substance is reduced?

13 / 30

13. Which element undergoes reduction in the reaction ?

14 / 30

14. Which of the following elements undergoes oxidation by electron loss in the reaction ?

15 / 30

15. How is the oxidation number useful in balancing redox reactions?

16 / 30

16. Which of the following factors does NOT directly affect the electrode potential of a half-cell?

17 / 30

17. Which of the following is an example of a redox reaction in everyday life?

18 / 30

18. Which of the following reactions is a combination reaction?

19 / 30

19. What is the result of the disproportionation of chlorine in the reaction ?

20 / 30

20. In the reaction , what happens to the oxygen in hydrogen peroxide?

21 / 30

21. In the reaction , how is the oxidation state of copper (Cu) changing?

22 / 30

22. Which of the following is an example of a non-metal displacement reaction?

23 / 30

23. What is the standard electrode potential for the half-reaction ?

24 / 30

24. What is the name of the cycle that produces most of the ATP in cellular respiration?

25 / 30

25. Which of the following is the product of the reaction between chlorine gas and potassium bromide ()?

26 / 30

26. What is the oxidation state of chromium in (chromium(III) oxide)?

27 / 30

27. What is the primary role of an oxidizing agent in the bleaching process?

28 / 30

28. What is the final product of anaerobic respiration in muscles?

29 / 30

29. What happens to the iron atoms during the formation of rust?

30 / 30

30. What is the oxidation number of hydrogen in (water)?

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Class 11 Chemistry: Redox Reactions Online Test (Paper 3)

Welcome to Paper 3! You’ve warmed up—now it's time to step up your game and conquer the challenge with tougher questions!

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  • Total Questions: 50
  • Time Allotted: 75 minutes
  • Passing Score: 70%
  • Randomization: Yes
  • Certificate: Yes
  • Retake: Allowed
  • Price: 100% Free

Good luck! 👍

1 / 50

1. In the reaction , what type of reaction is this?

2 / 50

2. What is the function of the salt bridge in a galvanic cell?

3 / 50

3. Which of the following is an example of a comproportionation reaction?

4 / 50

4. In the compound , what is the oxidation number of sodium (Na)?

5 / 50

5. Which of the following is true about comproportionation reactions?

6 / 50

6. In the reaction , what happens to oxygen in hydrogen peroxide?

7 / 50

7. In a galvanic cell, if the anode is zinc () and the cathode is copper (), what happens to the zinc electrode over time?

8 / 50

8. Which of the following is produced during the light-dependent reactions of photosynthesis?

9 / 50

9. What is formed when calcium (Ca) reacts with oxygen (O)?

10 / 50

10. What is the role of NADH in cellular respiration?

11 / 50

11. How does sodium hypochlorite () bleach clothes?

12 / 50

12. In the compound (sulfurous acid), what is the oxidation number of sulfur (S)?

13 / 50

13. Which method is commonly used to balance redox reactions in acidic media?

14 / 50

14. In photosynthesis, what is the energy source that plants use to produce glucose?

15 / 50

15. What happens to the concentration of ions at the cathode in a galvanic cell?

16 / 50

16. What is a decomposition reaction?

17 / 50

17. What is the role of electrons in the redox reactions of a galvanic cell?

18 / 50

18. In the cell notation , what does the represent?

19 / 50

19. In the reaction , what type of process is occurring?

20 / 50

20. In the reaction , which ion is the oxidizing agent?

21 / 50

21. How do oxidizing agents like chlorine and hydrogen peroxide affect the chemical structure of colored compounds?

22 / 50

22. In cellular respiration, what is the primary role of oxygen?

23 / 50

23. In the reaction , what type of reaction is this?

24 / 50

24. What is the oxidation state of copper in the complex ?

25 / 50

25. What is the primary purpose of the proton gradient in the electron transport chain?

26 / 50

26. In a galvanic cell, what happens to the metal at the anode?

27 / 50

27. Which of the following is an example of a decomposition reaction?

28 / 50

28. Which of the following oxidizing agents is used for bleaching hair?

29 / 50

29. Which of the following reactions is a combination reaction involving two compounds?

30 / 50

30. Which of the following is a strong reducing agent?

31 / 50

31. What is the oxidation state of copper in (copper(II) sulfate)?

32 / 50

32. Which of the following is an example of a disproportionation reaction involving sulfur?

33 / 50

33. What is a key limitation of the old definition of reduction as the loss of oxygen?

34 / 50

34. In the reaction , which substance is the oxidizing agent?

35 / 50

35. Which metal is commonly used to prevent rusting through galvanization?

36 / 50

36. What is the oxidation number of nitrogen in (ammonia)?

37 / 50

37. In the compound , what is the oxidation state of chromium (Cr)?

38 / 50

38. Which of the following statements about the electron transport chain in cellular respiration is true?

39 / 50

39. In the reaction , which substance is the reducing agent?

40 / 50

40. How do you scale the half-reactions to balance and in acidic solution?

41 / 50

41. Which of the following reactions is a combination reaction?

42 / 50

42. After identifying the changes in oxidation numbers, what is the next step in balancing a redox reaction using the oxidation number method?

43 / 50

43. What is the primary role of an oxidizing agent in the bleaching process?

44 / 50

44. What is the oxidation state of nitrogen in ?

45 / 50

45. In the reaction , what is the role of ions?

46 / 50

46. Which of the following is NOT an example of a displacement reaction?

47 / 50

47. In the reaction , how do the oxidation numbers of manganese change?

48 / 50

48. What is the oxidation number of hydrogen in most compounds?

49 / 50

49. What is the concept of oxidation in terms of electron transfer?

50 / 50

50. Which of the following is an example of a non-metal displacement reaction?

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Practice Redox Reactions MCQs
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Class 11 Chemistry — Chapter 8: Redox Reactions Online Test

The Class 11 Chemistry: Chapter 8 – Redox Reactions Online Test provides you with a comprehensive set of 376 MCQs, designed to assess your understanding of redox reactions, electron transfer processes, and related concepts. This test is completely free, NCERT/CBSE-aligned, and offers unlimited attempts for focused practice. Whether you’re preparing for your Class 11 exams, or studying for competitive exams like JEE or NEET, this test serves as an ideal mock exam to check your mastery of the topic.

Feeling a bit anxious before the exam? This page will help you practice Redox Reactions at your own pace. It’s like a mock exam you can take from home, using your phone or laptop. Each test attempt provides a real exam-like experience, allowing you to practice under timed conditions, review answers, and—if you pass Paper 3—receive a certificate. With every attempt, you’ll boost your confidence and refine your understanding of this critical chapter in Chemistry.

What is the Class 11 Chemistry: Redox Reactions Online Test?

This page includes three MCQ papers for Chapter 8: Redox Reactions:

  • Paper 1 (Easy) — Foundation: 20 questions · 30 min · Pass 40% · Fixed set
  • Paper 2 (Medium) — Mixed: 30 questions · 45 min · Pass 50% · Randomized from a large pool of 376 MCQs
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: You will receive new question mixes in Paper 2 and Paper 3 with every attempt, ensuring fresh content every time. After submitting each test, you’ll get instant results with detailed explanations for the questions you answered incorrectly.

Topics covered in these online tests

The test covers all the key topics from Chapter 8: Redox Reactions, ensuring that you are fully prepared for your exams. The following topics are included:

  • Redox reactions — Concept, examples, and basic definitions
  • Oxidation and reduction — Electron transfer, change in oxidation states, and balancing reactions
  • Oxidizing and reducing agents — Properties and examples
  • Balancing redox reactions — Half-reaction method, oxidation number method
  • Electrochemical series — Standard electrode potentials and their significance
  • Applications of redox reactions — Electrolysis, corrosion, and oxidation-reduction in living organisms
  • Galvanic cells — Principle, construction, and working
  • Electrolytic cells — Faraday’s laws, applications in industry
  • Standard electrode potentials — Determination and their role in predicting reaction feasibility
  • Redox titrations — Use of redox reactions in determining unknown concentrations of solutions

If you’re looking for more practice, check out the Redox Reactions MCQs and the full Class 11 Chemistry MCQ Collection to expand your knowledge further.

How This Exam-Style Online Test Works

Short version: Pick a paper → Answer MCQs within time → Submit → Get instant score and review. Pass Paper 3 to earn a certificate.

What you’ll see during the test

  • MCQs: Each question will have four options: A, B, C, and D.
  • Timer on top: Paper 1: 30 min, Paper 2: 45 min, Paper 3: 75 min.
  • Pagination: Typically 10 questions per page (you can navigate through pages using the controls).
  • Navigation: Use the Next/Prev buttons or the question map to revisit any question before submitting.
  • View Result: After completing a paper, click View Result to see your score and review your answers.
  • Result Page: Shows score %, correct / incorrect / unanswered count, and provides a detailed review.
  • Restart: Click Restart Test to try again with a fresh set of questions.

Note: You can share your feedback on the result page after completing the test to help us improve the platform.

Marking & pass criteria

  • Scoring: +1 for each correct answer, 0 for incorrect answers (no negative marking).
  • Passing marks: Paper 1 — 40% • Paper 2 — 50% • Paper 3 — 70%.
  • Randomization: Paper 2 & 3 shuffle questions from a large pool of 376 questions on every attempt. Paper 1 has a fixed set.

Who can take this test?

  • Class 11 CBSE/NCERT students looking to practice and test their understanding of Redox Reactions.
  • JEE/NEET aspirants preparing for competitive exams and seeking a thorough revision of redox reactions.
  • Teachers and tutors needing pre-made chapter tests for assignments, quizzes, and quick assessments.
  • Students from other boards & countries preparing for exams that include redox reactions in their syllabus.
  • Competitive exam aspirants revising key redox reaction concepts for various entrance exams.

Advantages of this online test

  • Real exam feel: The test is timed, with pass percentages and automatic submission once the time is up.
  • Instant feedback: Get your results immediately and review correct/incorrect answers to understand where you need improvement.
  • Step-up difficulty: Start with Paper 1 (Easy), move to Paper 2 (Medium), and finish with Paper 3 (Hard) + certificate.
  • Unlimited attempts: Practice as much as you like with fresh randomized questions in Paper 2 and Paper 3.
  • Zero cost: This test is completely free. No signup or payment required to access the tests.

How this test helps you study better

  • Step 1 – Concept check: Attempt Paper 1 after reviewing the chapter to identify weak areas.
  • Step 2 – Reinforce learning: Attempt Paper 2 (randomized) to stabilize your knowledge of redox reactions and trends.
  • Step 3 – Exam readiness: Take Paper 3 under exam conditions to assess your overall performance.
  • Step 4 – Review: Review your results and focus on missed concepts. Maintain a log of weak areas.
  • Step 5 – Retake smartly: Re-attempt the test after a break to check your recall and progress.

Important notes (read before you start)

  • Do not refresh or close the tab during the test.
  • Best experience: Use a modern browser like Chrome or Edge with a stable internet connection.
  • Allow cookies and local storage for seamless progress tracking.
  • Safety: This test is 100% free, with no hidden charges or sign-ups required.

More practice for Class 11 Chemistry

After completing this online test, practice further with the complete Class 11 Chemistry Online Test Index or dive into other chapters from the Class 11 Chemistry MCQ Collection.

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