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Name any two applications of adsorption....

Name any two applications of adsorption.

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(i) In gas masks : Activated charcoal is used in gas masks. This adsorbs the poisonous gases or vapours and allows pure air to pass through.
(ii) Removal of colouring matter : Colouring material in sugar and vegetable oils is removed by treatment with activated charcoal, that adsorbs the colour.
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