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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

Good luck! 👍

1 / 30

1. In Dumas method, the nitrogen gas evolved is collected over:

2 / 30

2. In a ring closure rearrangement, the reaction leads to:

3 / 30

3. In an electrophilic addition reaction to an alkene, the intermediate species formed is:

4 / 30

4. Which of the following is an example of the electromeric effect?

5 / 30

5. Which of the following is an example of a naturally occurring alkaloid?

6 / 30

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

7 / 30

7. Sublimation is a purification method used for substances that:

8 / 30

8. Which apparatus component is essential for steam distillation?

9 / 30

9. What happens to non-sublimable impurities during sublimation?

10 / 30

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

11 / 30

11. Which of the following structures exhibits the strongest hyperconjugation effect?

12 / 30

12. The mesomeric effect (+M) involves:

13 / 30

13. In Liebig’s method, hydrogen present in the compound is finally collected as:

14 / 30

14. Which of the following functional groups shows the +I effect?

15 / 30

15. Which of the following statements correctly describes a carbocation?

16 / 30

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

17 / 30

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

18 / 30

18. Carbocations are stabilized by:

19 / 30

19. During Lassaigne’s test, the addition of dilute HCl after FeSO₄ is necessary to:

20 / 30

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

21 / 30

21. Iodide ions react with AgNO₃ to produce a precipitate that is:

22 / 30

22. In the sodium nitroprusside test, sodium sulfide reacts with sodium nitroprusside to give a color that confirms sulfur. What is the color?

23 / 30

23. Limewater turns milky during the CuO test due to the formation of:

24 / 30

24. Which of the following correctly describes a nitrene?

25 / 30

25. Which carbanion is the most stable?

26 / 30

26. The appearance of Prussian blue color confirms the presence of:

27 / 30

27. Organic compounds are mainly characterized by the presence of which of the following elements?

28 / 30

28. The electromeric effect is:

29 / 30

29. In the IUPAC system, how is the longest carbon chain identified in the naming of organic compounds?

30 / 30

30. Which of the following is the correct IUPAC name for the third member of the alkane homologous series?

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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. What is the primary purpose of the CuO test?

2 / 50

2. Which of the following is true about the electromeric effect in conjugated systems?

3 / 50

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

4 / 50

4. The water formed during combustion in Liebig’s method is absorbed by:

5 / 50

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

6 / 50

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

7 / 50

7. Which of the following groups exhibits a +I (inductive electron-donating) effect?

8 / 50

8. Why is the starting line drawn in pencil in paper chromatography?

9 / 50

9. Simple distillation cannot effectively separate ethanol and water because:

10 / 50

10. How does the +I effect influence the stability of carbocations?

11 / 50

11. Nitrenes commonly form from the decomposition of:

12 / 50

12. Steam distillation allows high-boiling liquids to distill at:

13 / 50

13. Which of the following halides does NOT react with AgNO₃?

14 / 50

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

15 / 50

15. Which observation confirms the presence of hydrogen in an organic compound during the CuO test?

16 / 50

16. Steam distillation is most commonly used for extracting:

17 / 50

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

18 / 50

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

19 / 50

19. Which silver halide precipitate dissolves completely in excess ammonia?

20 / 50

20. Which purification technique is best for separating solid impurities from a solution?

21 / 50

21. Which of the following factors can favor a rearrangement reaction?

22 / 50

22. Which of the following carbanions is stabilized by resonance?

23 / 50

23. In paper chromatography, the stationary phase is:

24 / 50

24. Which of the following is a natural source of organic compounds?

25 / 50

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

26 / 50

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

27 / 50

27. Which solvent is generally avoided in crystallization due to its strong hydrogen bonding?

28 / 50

28. During Lassaigne’s test, the addition of dilute HCl after FeSO₄ is necessary to:

29 / 50

29. The presence of which element in an organic compound can be confirmed by the Lassaigne's test?

30 / 50

30. Which of the following is the functional group in the homologous series of alcohols?

31 / 50

31. Which of the following is the MOST important property of a good crystallization solvent?

32 / 50

32. Which of the following functional groups can exhibit the electromeric effect?

33 / 50

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

34 / 50

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

35 / 50

35. In a reaction involving a Wagner-Meerwein rearrangement, which of the following intermediates is involved?

36 / 50

36. Which best describes the principle behind sublimation?

37 / 50

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

38 / 50

38. Which of the following compounds can be purified using sublimation?

39 / 50

39. Why is the organic compound mixed with CuO in Liebig’s method before combustion?

40 / 50

40. Which of the following is an example of a free radical addition reaction?

41 / 50

41. A compound with a very high value in TLC indicates:

42 / 50

42. Which of the following statements about the –I effect is correct?

43 / 50

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

44 / 50

44. What functional group is present in aldehydes?

45 / 50

45. Which of the following destabilizes a carbanion?

46 / 50

46. Which of the following is the first member of the alkane homologous series?

47 / 50

47. In Lassaigne’s test for sulfur, what is the advantage of using both lead acetate and sodium nitroprusside tests?

48 / 50

48. Why is the receiving flask often cooled in fractional distillation?

49 / 50

49. What is the general molecular formula for alkanes?

50 / 50

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

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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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