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

2 / 30

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

3 / 30

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

4 / 30

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

5 / 30

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

6 / 30

6. When AgNO₃ is added to the acidified Lassaigne’s extract containing chloride ions, the precipitate formed is:

7 / 30

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

8 / 30

8. Which free radical is the most stable?

9 / 30

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

10 / 30

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

11 / 30

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

12 / 30

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

13 / 30

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

14 / 30

14. Which of the following is an example of an electrophilic addition to an alkene?

15 / 30

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

16 / 30

16. What is the purpose of scratching the container during crystallization?

17 / 30

17. Which of the following is the correct IUPAC name for the compound with the formula ?

18 / 30

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

19 / 30

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

20 / 30

20. A student performs Lassaigne’s test for sulfur but gets no black precipitate with lead acetate. Which error is LEAST likely responsible?

21 / 30

21. What color change is observed in the lead acetate test that confirms sulfur?

22 / 30

22. Which of the following is an example of a natural source of organic compounds that is also used as a food preservative?

23 / 30

23. Which of the following is an example of a free radical substitution reaction?

24 / 30

24. The stability order due to hyperconjugation is:

25 / 30

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

26 / 30

26. Which of the following can cause errors in Liebig’s estimation of carbon and hydrogen?

27 / 30

27. Which carbocation is the most stable?

28 / 30

28. In paper chromatography, the stationary phase is:

29 / 30

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

30 / 30

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

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

2 / 50

2. The IUPAC name of CH₃CH₂OH is:

3 / 50

3. Which of the following is the correct IUPAC name for the compound with the formula ?

4 / 50

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

5 / 50

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

6 / 50

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

7 / 50

7. Which statement is correct regarding vacuum distillation?

8 / 50

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

9 / 50

9. Which of the following is true about free radical addition reactions?

10 / 50

10. Which of the following statements about carbanion structure is correct?

11 / 50

11. Carbocations are stabilized by:

12 / 50

12. What type of rearrangement occurs in the formation of tert-butyl carbocation from neopentyl carbocation?

13 / 50

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

14 / 50

14. Nitrenes can undergo rearrangements similar to:

15 / 50

15. Which of the following is true regarding the –I (inductive electron-withdrawing) effect?

16 / 50

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

17 / 50

17. Which safety precaution is essential while performing sublimation?

18 / 50

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

19 / 50

19. Which principle allows heat-sensitive compounds to be distilled by steam distillation?

20 / 50

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

21 / 50

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

22 / 50

22. Nitrenes commonly form from the decomposition of:

23 / 50

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

24 / 50

24. Which of the following is the main characteristic of the electromeric effect?

25 / 50

25. Which of the following carbocations is aromatic and therefore highly stable?

26 / 50

26. Crystallization is primarily used for the purification of:

27 / 50

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

28 / 50

28. Which of the following statements correctly describes a carbanion?

29 / 50

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

30 / 50

30. Which of the following conditions helps in efficient sublimation?

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

34. What functional group is present in aldehydes?

35 / 50

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

36 / 50

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

37 / 50

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

38 / 50

38. The electromeric effect is typically observed in:

39 / 50

39. Which of the following is a characteristic feature of organic compounds?

40 / 50

40. Why is hot filtration used during crystallization?

41 / 50

41. During the CuO test, hydrogen present in the organic compound forms:

42 / 50

42. Hyperconjugation can be explained as:

43 / 50

43. Which free radical is the most stable?

44 / 50

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

45 / 50

45. Which is the correct stability order of nitrenes?

46 / 50

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

47 / 50

47. Which of the following is true about the bonding in organic compounds?

48 / 50

48. The electromeric effect is:

49 / 50

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

50 / 50

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

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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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