Q.

Activated charcoal is used in gas masks because _____.    

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a

it adsorbs oxygen and provides to users

b

it filters dust from air

c

it adsorbs even traces of poisonous gases and allows pure air to pass through it

d

absorbs moisture

answer is C.

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Detailed Solution

it adsorbs even traces of poisonous gases and allows pure air to pass through it

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