Q.

Chlorine acts as a bleaching agent only in the presence of ____ ?

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a

Dry air

b

Moisture

c

Sunlight

d

Pure oxygen

answer is B.

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Detailed Solution

Chlorine acts as an oxidising agent in the presence of water because, its forms hypo chlorous acid which is a strong oxidising agent as it releases [O].Cl2+H2O→HCl+HOCl HOCl→HCl+[O]The bleaching nature of chlorine is due to its oxidising ability.
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Chlorine acts as a bleaching agent only in the presence of ____ ?