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Class 11 Chemistry — Chapter 12: Organic Chemistry Online Test

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Class 11 Chemistry: Organic Chemistry 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 Kjeldahl’s method, nitrogen is converted during digestion into:

2 / 20

2. Hydrogen percentage in Liebig’s method is calculated using:

3 / 20

3. Which observation indicates incomplete sodium fusion while testing for sulfur?

4 / 20

4. During sodium fusion, nitrogen present in the compound is converted into:

5 / 20

5. Chromatography works on the basic principle of:

6 / 20

6. Which of the following statements correctly describes distillation under reduced pressure (vacuum distillation)?

7 / 20

7. Which order represents the stability of simple alkyl free radicals?

8 / 20

8. In the E1 elimination mechanism, the rate-determining step involves:

9 / 20

9. Hyperconjugation is most effective when:

10 / 20

10. Which of the following compounds is named correctly according to IUPAC nomenclature?

11 / 20

11. What is the primary method of synthesizing organic compounds in a laboratory?

12 / 20

12. Hyperconjugation involves the delocalization of electrons from:

13 / 20

13. What is the main factor that determines the reactivity of organic compounds?

14 / 20

14. What functional group is present in thiols?

15 / 20

15. Which of the following groups exhibits the –M (mesomeric electron-withdrawing) effect?

16 / 20

16. Which of the following is the key characteristic of an SN2 mechanism?

17 / 20

17. Which of the following reactions is commonly associated with a hydride shift during the rearrangement?

18 / 20

18. Which carbanion is stabilized by both resonance and inductive effects?

19 / 20

19. Nitrenes commonly form from the decomposition of:

20 / 20

20. Which principle does simple and fractional distillation primarily depend on?

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Class 11 Chemistry: Organic Chemistry 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

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1 / 30

1. Which of the following is the correct IUPAC name for the compound with the structure ?

2 / 30

2. In the Prussian blue test, the sodium extract is first treated with:

3 / 30

3. What is the main factor that determines the reactivity of organic compounds?

4 / 30

4. Which of the following is true about members of a homologous series?

5 / 30

5. Why is the tertiary butyl radical more stable than a secondary radical?

6 / 30

6. Which of the following best describes a rearrangement reaction?

7 / 30

7. In a nucleophilic substitution reaction, the rate-determining step in an SN1 mechanism involves:

8 / 30

8. What is the main source of synthetic organic compounds used in industry?

9 / 30

9. Fractional distillation is used when two liquids:

10 / 30

10. Which of the following correctly describes a carbene?

11 / 30

11. Which factor stabilizes a free radical the most?

12 / 30

12. Which of the following is the correct stability order for simple alkyl carbanions?

13 / 30

13. Which of the following is the functional group in carboxylic acids?

14 / 30

14. In steam distillation, the ratio of masses of water and organic compound collected is determined by:

15 / 30

15. Free radicals are generally formed by:

16 / 30

16. Which of the following is an example of an organic compound derived from coal tar?

17 / 30

17. Which of the following is an example of a group that exhibits the –I effect?

18 / 30

18. The electromeric effect occurs when:

19 / 30

19. Which of the following natural sources is primarily used for the extraction of essential oils?

20 / 30

20. In Dumas method for nitrogen estimation, the organic compound is heated with excess copper oxide to produce nitrogen gas and:

21 / 30

21. Which of the following factors increases the hyperconjugation effect?

22 / 30

22. Which halogen gives a pale yellow precipitate with AgNO₃?

23 / 30

23. The –M (mesomeric electron-withdrawing) effect makes the molecule:

24 / 30

24. In the CuO test, the presence of carbon is confirmed by:

25 / 30

25. In the estimation of oxygen, the organic compound is treated with:

26 / 30

26. The mesomeric (resonance) effect primarily operates through:

27 / 30

27. Which of the following is the functional group in alkynes?

28 / 30

28. Which order represents the stability of simple alkyl free radicals?

29 / 30

29. Which of the following is the key characteristic of an SN2 mechanism?

30 / 30

30. During the CuO test, the carbon in the organic compound is converted into:

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Class 11 Chemistry: Organic Chemistry 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. Which of the following statements about crystallization is TRUE?

2 / 50

2. Which of the following is an example of an organic compound derived from coal tar?

3 / 50

3. Which of the following functional groups exhibits the strongest –I effect?

4 / 50

4. Why is slow cooling preferred in crystallization?

5 / 50

5. Which of the following destabilizes a carbanion?

6 / 50

6. Why must the Lassaigne’s extract be alkaline before performing the sodium nitroprusside test?

7 / 50

7. Which of the following is the key characteristic of an SN2 mechanism?

8 / 50

8. What is the correct IUPAC name for the compound ?

9 / 50

9. Which of the following is the correct description of the –M (mesomeric withdrawing) effect?

10 / 50

10. Which of the following is true about the E2 elimination mechanism?

11 / 50

11. Freshly prepared FeSO₄ solution is necessary in the Prussian blue test because:

12 / 50

12. In an electrophilic substitution reaction, the leaving group:

13 / 50

13. In Dumas method for nitrogen estimation, the organic compound is heated with excess copper oxide to produce nitrogen gas and:

14 / 50

14. During the CuO test, the carbon in the organic compound is converted into:

15 / 50

15. What is the main purpose of using a fractionating column?

16 / 50

16. Which of the following is an example of an electrophilic addition reaction in organic chemistry?

17 / 50

17. Which of the following is an example of a group that exhibits the –I effect?

18 / 50

18. In Kjeldahl’s method, the ammonia produced is absorbed in:

19 / 50

19. The electromeric effect is typically observed in:

20 / 50

20. Sublimation will NOT work for which of the following?

21 / 50

21. In Kjeldahl’s method, the organic compound is digested with concentrated sulfuric acid in the presence of:

22 / 50

22. What is the correct IUPAC name for the compound with the structure ?

23 / 50

23. Which functional group is present in alcohols?

24 / 50

24. In which situation does a carbocation rearrangement not occur?

25 / 50

25. Which observation indicates incomplete sodium fusion while testing for sulfur?

26 / 50

26. Which order represents the stability of simple alkyl free radicals?

27 / 50

27. Sublimation separates a solid from impurities that are:

28 / 50

28. Which of the following is an example of an electrophilic substitution reaction?

29 / 50

29. Hyperconjugation is most effective when:

30 / 50

30. Which group increases the stability of a carbanion through the –I effect?

31 / 50

31. Which of the following is an example of electronic displacement through induction?

32 / 50

32. What is the electronic configuration of a singlet carbene?

33 / 50

33. Which of the following is the least stable carbocation?

34 / 50

34. Which of the following is the correct stability order for simple alkyl carbanions?

35 / 50

35. Why is the tertiary butyl radical more stable than a secondary radical?

36 / 50

36. Which of the following best describes a nucleophilic substitution reaction?

37 / 50

37. What is the IUPAC name for the compound ?

38 / 50

38. The inductive effect (+I) refers to:

39 / 50

39. Which of the following is the correct IUPAC name for the second member of the alkene homologous series?

40 / 50

40. Which of the following is true regarding the structure of organic compounds?

41 / 50

41. Which of the following is a key feature of the E2 mechanism?

42 / 50

42. Chromatography works on the basic principle of:

43 / 50

43. What is the result of a free radical halogenation reaction of an alkane?

44 / 50

44. Which of the following best describes a nucleophilic addition reaction?

45 / 50

45. What is the purpose of boiling the Lassaigne's extract before testing for nitrogen?

46 / 50

46. In which of the following conditions is the E1 elimination mechanism most likely to occur?

47 / 50

47. In the CuO test, which change in copper oxide confirms the reaction has occurred?

48 / 50

48. In a free radical addition reaction, the first step is:

49 / 50

49. Which of the following is an example of an electrophilic aromatic substitution reaction?

50 / 50

50. Hydrogen percentage in Liebig’s method is calculated using:

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Practice Organic Chemistry MCQs
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Class 11 Chemistry — Chapter 12: Organic Chemistry Online Test

The Class 11 Chemistry: Chapter 12 – Organic Chemistry Online Test is a great way to enhance your understanding of organic chemistry fundamentals. This chapter test contains 300 MCQs that will assess your knowledge of organic compounds, functional groups, and reaction mechanisms. This test is free, NCERT-aligned, and allows unlimited attempts to help you practice and improve your skills.

This chapter’s content is highly relevant for Class 11 CBSE exams and competitive tests like JEE and NEET. You will not only reinforce your understanding of organic chemistry but also build a strong foundation for future studies. The test has been designed to mimic real exam conditions with timed MCQs and instant feedback on your performance.

What is this Class 11 Chemistry: Organic Chemistry Online Test?

This online test contains three exam-style MCQ papers for Chapter 12:

  • 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 pool of 300 questions
  • Paper 3 (Hard) — Challenge: 50 questions · 75 min · Pass 70% · Randomized from the same pool + Certificate on pass

Note: You’ll receive new question mixes with each attempt in Paper 2 and Paper 3. The tests are auto-evaluated with instant results, so you can quickly identify areas for improvement.

Topics covered in these online tests

The following important topics from Chapter 12: Organic Chemistry are covered in this test:

  • Introduction to Organic Chemistry — Definition, importance, and distinguishing organic compounds from inorganic compounds.
  • Classification of Organic Compounds — Alkanes, alkenes, alkynes, aromatic compounds, etc.
  • Functional Groups — Alcohols, aldehydes, ketones, carboxylic acids, amines, and more.
  • IUPAC Nomenclature — Rules for naming organic compounds, isomerism, and stereochemistry.
  • Isomerism — Structural isomerism, functional group isomerism, geometrical isomerism, optical isomerism.
  • Reaction Mechanisms — Addition, elimination, substitution reactions; free radical, electrophilic and nucleophilic substitutions.
  • Properties and Reactions of Organic Compounds — Physical and chemical properties of alkanes, alkenes, alkynes, alcohols, aldehydes, and carboxylic acids.
  • Carbocation, Carbanion, and Free Radicals — Stability, formation, and reactions of intermediates in organic reactions.
  • Polymerization — Mechanisms of addition and condensation polymerization.
  • Basic Organic Laboratory Techniques — Techniques for purifying organic compounds (distillation, filtration, crystallization).

If you want to practice these concepts further, you can check out additional MCQs for other chapters in the Class 11 Chemistry MCQs collection and deepen your understanding of organic chemistry.

How This Exam-Style Online Test Works

Quick guide: Pick a paper → Answer the MCQs within the time limit → Submit → Get your score instantly and review the answers. You can retake the test as many times as you like to improve your score.

What you’ll see

  • MCQs: One question with four options (A, B, C, D).
  • Timer on top: P1: 30 min • P2: 45 min • P3: 75 min.
  • Pagination: Typically 10 questions per page (use the page controls to navigate).
  • Navigation: Use Next/Prev buttons or the question map to revisit questions before submitting.
  • View Result: Click View Result to see marks and detailed summary of your answers.
  • Result page shows: Your score percentage, correct/incorrect/unanswered counts, answer key, and an option to share your result.
  • Restart: Click Restart Test to get a new randomized set of questions for Paper 2 and Paper 3.

Note: After completing each test, please provide your feedback on the result page to help us improve.

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 & Paper 3 shuffle questions from a large pool, so you get new mixes on every attempt. Paper 1 remains fixed.

Who Can Take This Test?

  • CBSE Class 11 students revising Chapter 12 (Organic Chemistry).
  • JEE/NEET aspirants who want to strengthen their understanding of organic chemistry concepts and reactions.
  • Class 12 bridge learners revisiting Chapter 12 topics for a stronger foundation in organic chemistry.
  • Teachers / Tutors needing ready-to-use chapter tests and practice material for students.
  • Self-learners or homeschoolers looking for practice tests to improve understanding of organic chemistry.

Advantages of this Online Test

  • Real exam feel: Timed tests with pass percentages, providing a real exam-like experience.
  • Instant feedback: Get immediate results with a detailed review to help you identify and fix weak spots.
  • Step-up difficulty: Easy → Medium → Hard + Certificate after passing Paper 3.
  • Unlimited attempts: Practice as much as needed with randomized questions in Paper 2 and Paper 3.
  • Zero cost: Completely free, with no sign-ups or payments required.

How This Test Helps You Study Better

Follow this study plan:

  • Step 1 – Concept Check: Attempt Paper 1 to check your grasp of basic organic chemistry concepts.
  • Step 2 – Build Accuracy: Progress to Paper 2 for mixed questions on functional groups, nomenclature, and isomerism.
  • Step 3 – Challenge Yourself: Take Paper 3 to test your readiness for exams. Target ≥ 70% for a certificate.
  • Step 4 – Review: Go through the correct and incorrect answers to identify areas needing more focus.
  • Step 5 – Retake Smartly: Retake the test after 1–2 days to check your long-term recall and improvement.

Important Notes (Before You Start)

  • Do not refresh or close the tab during the test.
  • Best experience: Use the latest browser like Chrome or Edge and ensure a stable internet connection.
  • Allow cookies/local storage for saving your progress during the test.
  • Safety: The test is completely free. Ignore any payment requests or pop-ups.

More Practice for Class 11 Chemistry

After completing this organic chemistry test, explore more practice for other subjects: Class 11 Chemistry MCQ Collection or check out the full Class 11 Online Test page for other subjects.

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