- 1(current)
Q. No.During the hearing of a court case, the judge suspected that some changes in the documents had been carried out. He asked the forensic department to check the ink used at two different places. Which technique is most effective in providing the best results?
1. Column chromatography
2. Solvent extraction
3. Distillation
4. Thin layer chromatography
1. Column chromatography
2. Solvent extraction
3. Distillation
4. Thin layer chromatography
Subtopic: Â Purification of Organic Compounds |
 69%
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Paper chromatography operates based on which of the following principles?
1. Adsorption
2. Partition
3. Solubility
4. Volatility
Subtopic: Â Purification of Organic Compounds |
 61%
From NCERT
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Match the type of mixture of compounds in Column-I with the technique of separation/purification given in Column-II.
| Column-I | Column-II | ||
| A. | Two solids which have different solubilities in a solvent and which do not undergo a reaction when dissolved in it | 1. | Steam distillation |
| B. | Liquid that decomposes at its boiling point | 2. | Fractional distillation |
| C. | Steam volatile liquid | 3. | Crystallisation |
| D. | Two liquids that have boiling points close to each other | 4. | Distillation under reduced pressure |
Codes:
| A | B | C | D | |
| 1. | 3 | 4 | 1 | 2 |
| 2. | 1 | 2 | 3 | 4 |
| 3. | 1 | 4 | 3 | 2 |
| 4. | 4 | 1 | 3 | 2 |
Subtopic: Â Purification of Organic Compounds |
 85%
From NCERT
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Given below are two statements:
| Assertion (A): | Components of a mixture of red and blue inks can be separated by distributing the components between stationary and mobile phases in paper chromatography. |
| Reason (R): | The colored components of inks migrate at different rates because paper selectively retains different components according to the difference in their partition between the two phases. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Purification of Organic Compounds |
 85%
From NCERT
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NEET 2026 - Target Batch - Vital
Hints
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- 1(current)
Q. No.
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