The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:
Held on 2 Apr 2026 · Verified 6 Jul 2026.
Na2O,K2O,Al2O3 and As2O3
Al2O3,As2O3,CO and NO
K2O,Cl2O7,As2O3 and NO
Na2O,N2O,Al2O3 and CO
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