Which of the following way in used for classification of chromatography ?
Correct answer: D. All
- A. Shape
- B. Phase
- C. Mechanism
- D. All
Explanation
Chromatography can be classified by the shape or arrangement of the apparatus, by the phases involved, and by the separation mechanism. Thus all the listed methods are used as bases of classification. A student may choose “phase” because it is the most commonly taught classification, but it is not the only one.
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Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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