Why does chlorine act as a bleaching agnet ?

Why is dry chlorine cannot act as a bleaching agent.

Dry chlorine does not act as a bleaching agent. Why?

Why does SO_2 act as a bleaching agent and is temporary ?

(A) : Chlorine acts as a bleaching agent in the presence of moisture (R) : Chlorine forms hypochlorous acid in the presence of moisture.

(A) : Chlorine acts as a bleaching agent in the presence of moisture (R) : Chlorine forms hypochlorous acid in the presence of moisture.

Why does chlorine exhibit bleaching action only in the presence of water?

Why does SO_2 act as bleaching agent only in presence of moisture?

Chlorine acts as a bleaching agent only in the presence of