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Question
What is the role of activated charcoal in gas mask used in coal mines?
Solution
Role of activated charcoal can be explained on the basis of adsorption. In gas mask, charcoal adsorbs the pollutant gases like \[\ce{SO2, NO2, CH4, CO2}\] etc. present in atmosphere due to heavy traffic.
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Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
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