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प्रश्न
What is the difference between simple distillation and fractional distillation?
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उत्तर
| No. | Simple distillation | Fractional distillation |
| i. | If in a mixture the difference in boiling points of two liquids is appreciable/large, they are separated from each other using simple distillation. | If in a mixture the difference in boiling points of two liquids is not appreciable/large, they are separated from each other using the fractional distillation. |
| ii. | Simple distillation assembly is used. | The fractionating column is fitted in the distillation assembly. |
| e.g. | A mixture of acetone (b.p. 329 K) and water (b.p. 373 K) can be separated by this method. | A mixture of acetone (b.p. 329 K) and methanol (b.p. 337.7 K) can be separated by this method. |
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संबंधित प्रश्न
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| Column I | Column II |
| (i) Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it. | (a) Steam distillation |
| (ii) Liquid that decomposes at its boiling point | (b) Fractional distillation |
| (iii) Steam volatile liquid | (c) Simple distillation |
| (iv) Two liquids which have boiling points close to each other | (d) Distillation under reduced pressure |
| (v) Two liquids with large difference in boiling points. | (e) Crystallisation |
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Reason (R): Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation.
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