Select from the following list:
Fe2O3,NO,PbO,Mn2O7.
(a) Basic oxide...........
(b) Amphoteric oxide ...........
(c) Acidic oxide ...........
(d) Neutral oxide...........
Is Fe2O3 basic or acidic in nature ?
Classify Na2O, Al2O3 and SO3 as acidic, basic or amphoteric oxide. [3 MARKS]