Na2O2 can be used as :
oxidising agent
bleaching agent
manufacturer of dyes and benzoyl peroxide
all of these
As we learnt ,
Uses of Na2O2 -
1) As oxidising agent in inorganic chemistry
2) As bleaching agent
3) Manufacture of dyes and chemicals such as benzoyl peroxide, sodium perborate
4) For purification of air in confined spaces such as submarines because it gives .
Na2O2 can be used as all of the given options