Statement I : HNO2 acts both as an oxidising as well as a reducing agent.Statement II : The Oxidation number of Nitrogen can increase above +3 and can also decrease below +3

I) Oxidation statement of 'N' in HNO2 = +3'+3' is the intermediate oxidation state of nitrogen.HNO2 can act like both oxidant and reductantIt can undergo reduction, +3 state to lower ox.stateIt can undergo oxidation, +3 state to higher ox.state