An inorganic substance on heating liberates oxygen and turns an acidified solution of KI brown and also reduces acidified `KMnO_4`. The substance is

An inorganic substance liberates oxygen on heating and turns an acidic solution of KI brown and reduces acidified KMnO_4 solution. The substance is

An inorganic substance liberates O_(2) when heated, turns an acidified solution of Kl brown and reduces acidified KMnO_(4) . The substance is (a) SO_(2) (b) H_(2)O_(2) (c) KNO_(3) (d) Pb(NO_(3))_(2)

An acidified solution of KMnO_(4) oxidises