Adsorption' principle is used for which of the following purification method?
- Extraction
- Chromatography
- Distillation
- Sublimation
The Correct Option is B
Approach Solution - 1
To solve this question, we need to understand the principle of adsorption and the methods mentioned in the options.
Adsorption Principle: Adsorption is the process by which atoms, ions, or molecules from a substance (usually a gas, liquid, or dissolved solid) adhere to a surface of the adsorbent. This process is utilized in various purification techniques where substances are selectively retained on the surface of the adsorbent material.
Now, let's evaluate each of the given options:
- Extraction: This is a separation process where a substance is separated from a mixture using a solvent. It does not primarily rely on adsorption.
- Chromatography: This method involves the separation of components in a mixture based on their differing velocities through a medium under the influence of a solvent. The principle of adsorption is heavily involved as different substances adhere to the stationary phase to varying extents, thus causing separation.
- Distillation: This is a method of separating mixtures based on differences in their volatilities in a boiling liquid mixture. It is not based on adsorption.
- Sublimation: Sublimation involves a solid changing directly to gas without passing through a liquid phase. Adsorption does not play a role in this process.
Conclusion: Among the given options, Chromatography is the method that relies on the principle of adsorption for purification. The stationary phase in chromatography adsorbs different components of the mixture to different extents, allowing separation and purification of the components.
Approach Solution -2
Principle used in chromatography is adsorption.
Thus the correct answer is Option 2: Chromatography.
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