Exam-Style Online Test | 11 Chemistry: Organic Chemistry

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. Which of the following species is most stabilized by hyperconjugation?

2 / 30

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

3 / 30

3. Which of the following is a property of saturated hydrocarbons?

4 / 30

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

5 / 30

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

6 / 30

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

7 / 30

7. The electromeric effect is:

8 / 30

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

9 / 30

9. Which is the correct stability order of nitrenes?

10 / 30

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

11 / 30

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

12 / 30

12. How does the +I effect influence the nucleophilicity of a molecule?

13 / 30

13. The movement of solvent in chromatography is mainly due to:

14 / 30

14. In sublimation, the solid is collected after cooling on a surface known as the:

15 / 30

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

16 / 30

16. Why is crystallization NOT suitable for removing volatile impurities?

17 / 30

17. Which of the following correctly describes a carbene?

18 / 30

18. In Lassaigne’s test for sulfur, the organic compound is fused with sodium metal to convert sulfur into:

19 / 30

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

20 / 30

20. Steam distillation is mainly used for separating substances that are:

21 / 30

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

22 / 30

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

23 / 30

23. In Liebig’s method, CO₂ produced is absorbed by:

24 / 30

24. The IUPAC name of CH₃CH₂OH is:

25 / 30

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

26 / 30

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

27 / 30

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

28 / 30

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

29 / 30

29. What is the IUPAC name for the compound with the structure ?

30 / 30

30. Which of the following statements best describes the effect of the electromeric shift on the stability of a molecule?

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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

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1 / 50

1. Which carbanion is the most stable?

2 / 50

2. Which of the following functional groups is present in alcohols?

3 / 50

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

4 / 50

4. The E1 mechanism is most favored when the substrate is:

5 / 50

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

6 / 50

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

7 / 50

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

8 / 50

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

9 / 50

9. Kjeldahl’s method CANNOT estimate nitrogen in organic compounds containing:

10 / 50

10. Which of the following functional groups exhibits a strong –M (mesomeric electron-withdrawing) effect in an aromatic compound?

11 / 50

11. Which of the following compounds undergoes nucleophilic addition reactions?

12 / 50

12. An organic compound gives no Prussian blue color in Lassaigne’s test. Which is the LEAST likely reason?

13 / 50

13. Which of the following statements about crystallization is TRUE?

14 / 50

14. In the lead acetate test for sulfur, sodium sulfide reacts with lead acetate to produce:

15 / 50

15. The blue precipitate formed in nitrogen detection is chemically known as:

16 / 50

16. Which best describes the principle behind sublimation?

17 / 50

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

18 / 50

18. During Liebig’s combustion method, carbon present in the organic compound is converted into:

19 / 50

19. Why is slow cooling preferred in crystallization?

20 / 50

20. In the AgNO₃ test for halogens, the Lassaigne’s extract is first acidified with:

21 / 50

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

22 / 50

22. Which of the following reactions leads to the final Prussian blue precipitate?

23 / 50

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

24 / 50

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

25 / 50

25. The boiling point of members of a homologous series generally increases with the increase in:

26 / 50

26. The water produced in the CuO test is detected using:

27 / 50

27. Which of the following is an example of an electrophilic addition reaction?

28 / 50

28. Which technique is used to check the purity of crystals obtained after crystallization?

29 / 50

29. What is the purpose of using activated charcoal during crystallization?

30 / 50

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

31 / 50

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

32 / 50

32. Why is crystallization NOT suitable for removing volatile impurities?

33 / 50

33. Simple distillation is most suitable for separating liquids that:

34 / 50

34. What is the primary purpose of the CuO test?

35 / 50

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

36 / 50

36. Which of the following groups has both +M and –I effects?

37 / 50

37. The value of a component is calculated by:

38 / 50

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

39 / 50

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

40 / 50

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

41 / 50

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

42 / 50

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

43 / 50

43. Which of the following radicals is aromatic and highly stable?

44 / 50

44. Which of the following is the functional group in ethers?

45 / 50

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

46 / 50

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

47 / 50

47. Which of the following compounds will most likely exhibit the electromeric effect?

48 / 50

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

49 / 50

49. Which of the following factors increases the rate of an SN1 nucleophilic substitution reaction?

50 / 50

50. What is the general molecular formula for alkanes in a homologous series?

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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)

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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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