Explain how high vacuum can be obtained by adsorption. – InterviewSolution

1.	Explain how high vacuum can be obtained by adsorption.
Answer» Lowering of temperature at a given pressure, increases the rate of adsorption of gases on charcoal powder. By using this principle, high vacuum can be attained by adsorption. A vessel evacuated by vacuum pump is connected to another vessel containing coconut charcoal cooled by liquid air. The charcoal adsorbs the remaining traces of air or moisture to create a high vacuum.

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