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. What is the driving force behind displacement reactions?

2 / 30

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

3 / 30

3. Which of the following reactions is an example of electrolysis, a type of decomposition reaction?

4 / 30

4. Where does glycolysis occur in a cell?

5 / 30

5. What is the oxidation state of manganese in (permanganate ion)?

6 / 30

6. What is the next step after adding electrons to balance the oxidation numbers in a redox reaction?

7 / 30

7. Which of the following processes occurs in the mitochondria and produces the most ATP?

8 / 30

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

9 / 30

9. What is the role of electrons in the rusting of iron?

10 / 30

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

11 / 30

11. Which of the following is an example of reduction due to the loss of oxygen?

12 / 30

12. What happens to the oxidation state of an element when fractional oxidation states are observed in a compound?

13 / 30

13. What is the process of anaerobic respiration?

14 / 30

14. In the half-reaction , what is the role of electrons?

15 / 30

15. Which of the following reactions demonstrates oxidation in terms of hydrogen loss?

16 / 30

16. If the standard electrode potential of the anode is -0.76 V and the cathode is 0.34 V, what is the standard EMF of the cell?

17 / 30

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

18 / 30

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

19 / 30

19. In the reaction , what is the role of hydrogen ions ()?

20 / 30

20. Which of the following is a strong oxidizing agent?

21 / 30

21. What is the role of oxygen in bleaching with oxidizing agents like hydrogen peroxide?

22 / 30

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

23 / 30

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

24 / 30

24. When balancing a redox reaction in basic medium using the ion-electron method, what is added to balance hydrogen atoms?

25 / 30

25. What is the oxidation number of phosphorus in (phosphorus trichloride)?

26 / 30

26. What is the protective layer that forms on iron during the corrosion process called?

27 / 30

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

28 / 30

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

29 / 30

29. Which of the following is an example of a combination reaction involving elements and compounds?

30 / 30

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

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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. What is meant by variable oxidation states of an element?

2 / 50

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

3 / 50

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

4 / 50

4. In glycolysis, what is the end product of the breakdown of glucose?

5 / 50

5. In the reaction where hydrogen peroxide is used as a bleaching agent, what is the main product after the oxidation of the pigment?

6 / 50

6. Which of the following reactions is an example of oxidation as electron loss?

7 / 50

7. In the reaction , what happens to iron (Fe)?

8 / 50

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

9 / 50

9. Which of the following substances can act as both an oxidizing agent and a reducing agent?

10 / 50

10. Where does glycolysis occur in the cell?

11 / 50

11. In a galvanic cell, where does reduction occur?

12 / 50

12. The EMF of a cell is 1.10 V. What does this indicate about the galvanic cell?

13 / 50

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

14 / 50

14. What is the oxidation number of oxygen in ?

15 / 50

15. If the standard electrode potential of the cathode is +0.34 V and the anode is -0.76 V, what is the standard EMF of the cell?

16 / 50

16. What is a disproportionation reaction?

17 / 50

17. What is the role of NADPH in photosynthesis?

18 / 50

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

19 / 50

19. What happens when the EMF of a cell is negative?

20 / 50

20. If the standard electrode potential of the anode is -0.76 V and the cathode is 0.34 V, what is the standard EMF of the cell?

21 / 50

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

22 / 50

22. When balancing a redox reaction in acidic medium using the ion-electron method, what is the final step after balancing the half-reactions?

23 / 50

23. In balancing redox reactions using the oxidation number method, what must be equal on both sides of the equation?

24 / 50

24. Which of the following processes occurs in the mitochondria and produces the most ATP?

25 / 50

25. What is the purpose of the external wire in a galvanic cell?

26 / 50

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

27 / 50

27. Which of the following is an example of a combination reaction involving elements and compounds?

28 / 50

28. Which of the following reactions represents reduction in terms of oxygen loss?

29 / 50

29. Which of the following factors can slow down the rusting process of iron?

30 / 50

30. What is the oxidation number of chlorine in ?

31 / 50

31. Which of the following compounds undergoes thermal decomposition?

32 / 50

32. What is the overall cell potential (E°cell) in a galvanic cell made from zinc and copper half-cells?

33 / 50

33. When balancing a redox reaction in basic medium using the ion-electron method, what is added to balance hydrogen atoms?

34 / 50

34. What was the main limitation of the old definition of oxidation and reduction, based on oxygen and hydrogen?

35 / 50

35. What is the primary chemical reaction involved in the rusting of iron?

36 / 50

36. What is the oxidation state of copper in (copper(I) oxide)?

37 / 50

37. Which molecule is the final electron acceptor in the electron transport chain during cellular respiration?

38 / 50

38. In the redox reaction , what type of reaction is occurring at the cathode?

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

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

43 / 50

43. Which of the following statements about oxidizing and reducing agents is true?

44 / 50

44. What is an oxidizing agent?

45 / 50

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

46 / 50

46. In the reaction , what happens to manganese?

47 / 50

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

48 / 50

48. What type of energy is typically required for a decomposition reaction to occur?

49 / 50

49. What is the oxidation number of oxygen in ?

50 / 50

50. How do you balance a redox reaction using the ion-electron method in acidic medium?

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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)

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  • Best experience: Use a modern browser like Chrome or Edge with a stable internet connection.
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  • 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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