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Purification and Characterisation of Organic Compounds Mock Test for NEET 2025

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How to Prepare for NEET 2025 with Chapter-wise Chemistry Mock Tests and Solutions

Purification And Characterisation Of Organic Compounds Mock Test 1 | NEET Mock Test
Mock Test: 20 Questions - 20 Minutes
Prepare yourself for NEET with 20 challenging questions from Purification And Characterisation Of Organic Compounds Mock Test 1. You have exactly 20 minutes to complete the test. Ready to begin?

Time Left: 20:00

1. Which technique is used for the purification of solids that sublime?

2. Which of the following is NOT a criterion for purity of organic compounds?

3. The method used to separate a salt from its solution in water is:

4. Lassaigne's test is used for detecting:

5. The best method for the separation of a mixture of aniline and toluene is:

6. The process of converting an impure solid into its pure form by dissolving in a suitable solvent and then crystallizing is:

7. In which technique is the principle of partition coefficient involved?

8. The function of KMnO4 in Lassaigne’s test is:

9. Which method is used for purification of liquids that decompose at their boiling point?

10. Organic compounds containing nitrogen give a blue colour with FeSO4 and NaOH during Lassaigne’s test because of:

11. Which technique is best suited for separating a mixture of two volatile organic liquids with close boiling points?

12. Which method is suitable for drying an organic compound?

13. The presence of sulphur in organic compounds is confirmed when:

14. The best method for separating a mixture of camphor and common salt is:

15. Which of the following is detected by the Beilstein test?

16. Which impurity is removed by shaking an organic liquid with water?

17. Which property is NOT usually used in characterisation of organic compounds?

18. The separation of coloured components of a mixture can be achieved by:

19. Acetone-water mixture can be separated by:

20. The process of separating a mixture based on differences in the rate of movement through a stationary phase is called:

Hurray! 🎉 You answered all the questions correctly! 🏆

Purification and Characterisation of Organic Compounds for NEET 2026 Mock Test Practice

Understanding the purification and characterisation of organic compounds is crucial for NEET aspirants, especially with the evolving 2025–2026 syllabus. These concepts ensure students can handle both theoretical questions and practical applications in lab and exam setups.


Purification is essential for obtaining organic compounds in their pure form, removing potential contaminants that affect chemical properties and reactions. For NEET exams, mastering purification techniques like sublimation, crystallization, distillation, and chromatography is key for scoring well.


Key Techniques Used in Purification of Organic Compounds

Different purification methods are selected based on the physical and chemical properties of organic substances. Sublimation targets solids that change directly from solid to vapor, while crystallization is suited for dissolving and re-forming pure crystals from impure substances.


When separating liquids, distillation and fractional distillation become vital, especially for mixtures with varying boiling points. Steam distillation works best for temperature-sensitive compounds such as aniline or nitrobenzene. Chromatography, a modern favorite, enables precise separation based on molecular interactions.


Method Principle Application/Example
Sublimation Direct solid-to-vapor transition Purifying camphor or naphthalene
Crystallization Differential solubility in solvent Sugar from impure mixture
Simple Distillation Boiling point difference Acetone from water
Fractional Distillation Multiple boiling points Separating alcohol–water
Chromatography Difference in mobility/partition Pigments in ink or leaf

Characterisation Techniques for NEET Chemistry

After purification, characterisation confirms both the purity and identity of an organic compound. Melting point and boiling point checks are often used for solid and liquid samples, respectively, and any deviation usually indicates impurities.


For NEET 2026, students must be familiar with methods such as refractive index measurement, elemental analysis (Lassaigne’s test for N, S, halogens), and advanced spectroscopic techniques (IR, UV-Vis, NMR), ensuring a comprehensive approach to problem-solving and CHO analysis.


Solving NEET Mock Tests: Strategies and Importance

Attempting chapter-wise NEET mock tests on topics like purification and characterization allows you to simulate the exam environment. This practice helps in time management, accuracy enhancement, and rapid recall of purification techniques and related formulae.


Utilizing the timer feature and instant scoring, students can assess their readiness, focus on weak areas, and experience NEET-like question styles. Analyzing incorrect answers and understanding explanations leads to deeper mastery and higher confidence for the real exam.


Organic Chemistry Purification: High-Yield Concepts for NEET 2026

Remember key “high-yield” NEET points: Crystallization and distillation remain the most frequently tested, while questions on Lassaigne’s test and chromatographic principles regularly appear. Knowing which technique applies to which system is crucial for quick and accurate answers in NEET MCQs.


Mock tests reinforce systematic problem-solving and help you track score trends, ultimately improving your overall NEET AIR prospects with every attempt. Consistent practice of chapter-specific purification and characterisation questions will maximize your NEET Chemistry score.


  • NEET full-length and chapter-wise mock tests with answer key
  • Designed as per latest NEET 2026 syllabus and exam pattern
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FAQs on Purification and Characterisation of Organic Compounds Mock Test for NEET 2025

1. Is Vedantu's NEET mock test free for all chapters?

Vedantu offers a mix of free and premium NEET mock tests for all chapters. You can access most chapter-wise mock tests for free, while some advanced mock test series or detailed solutions may require a subscription or registration.

2. Are Vedantu NEET mocks based on the NTA 2025 pattern?

Yes, all Vedantu NEET mock tests are fully aligned to the latest NTA 2025 exam pattern, including updated syllabus coverage, question types, and exam timing to ensure authentic practice for aspirants.

3. Can I take NEET mock tests on mobile?

Absolutely! Vedantu's NEET mock tests are mobile-friendly and can be accessed on any smartphone, tablet, or desktop device. Simply log in via the Vedantu website or app to start practicing anytime, anywhere.

4. Will I get detailed solutions after the test?

Yes, after submitting each NEET mock test, you will receive detailed solutions and step-by-step explanations for each question, along with instant scoring and answer keys for effective revision.

5. How many mock tests should I take before NEET?

It is recommended to take at least 10-15 full-length NEET mock tests and regular chapter-wise tests before the exam. This practice helps improve your speed, accuracy, and exam temperament.

6. Will Vedantu mock tests help improve my time management?

Yes, solving mock tests under timed conditions is one of the best ways to develop good time management skills for NEET. Each test simulates real exam timing and tracks the time spent per section to help you optimize your answering strategy.

7. Can I simulate NEET exam environment at home with these mock tests?

Yes, the NEET online mock test platform provides a real exam-like interface, including a timer, full question palette, and navigation similar to the official NEET exam. Practicing on this platform helps reduce exam-day anxiety and prepares you for the actual test environment.

8. Does my score improve with regular mock tests?

Practicing regular mock tests helps you analyze mistakes, learn from detailed solutions, and track your progress over time. Consistency in taking mocks generally leads to improved scores and confidence in the final NEET exam.

9. Can I identify weak topics using test analytics?

Yes, Vedantu’s analytics dashboard highlights topic-wise strengths and weaknesses after every mock test, enabling you to focus on NCERT-based weak areas for targeted improvement.

10. Do these mock tests track accuracy vs attempts?

Each NEET mock test provides a summary of your accuracy, attempted vs unattempted questions, and percentage correct, helping you evaluate and fine-tune your performance strategy.

11. Are there chapter-wise NEET mock tests for Chemistry topics like Purification and Characterisation of Organic Compounds?

Yes, chapter-wise NEET Chemistry mock tests for important topics such as Purification and Characterisation of Organic Compounds are available, featuring previous year questions, NCERT-based MCQs, and detailed explanations.

12. Do Vedantu mock tests include previous years' NEET and JEE questions for Purification of Organic Compounds?

Many Vedantu NEET Chemistry mock tests and practice sets feature a mix of previous years' NEET and JEE PYQs as well as latest model questions on chapters like Purification of Organic Compounds, ensuring ample exposure to exam-relevant patterns.