• # question_answer The most acidic oxide is A)  CaO              B)  MgOC) $N{{a}_{2}}O$                   D) $A{{l}_{2}}{{O}_{3}}$

Correct Answer: D

Solution :

Na, Mg and Ca are highly reactive metals and their oxides are strongly basic whereas$A{{l}_{2}}{{O}_{3}}$is amphoteric. So among all these oxides $A{{l}_{2}}{{O}_{3}}$is comparatively acidic. Hence, the correct option is [d].

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