Question

wch one of the following is an amphoteric oxides b2o3 zno ,na2o, so2

Answer 1

ZnO zinc oxide is an amphoteric oxide coz it reacts with both acid and base to give salt and water
With acid :
ZnO + HCl = ZnCl2 + H2O
With base
ZnO + NaOH = Na2ZnO2 + H2O