Question

Which of the following is a pair of amphoteric oxides?

Na20 and Mgo
CO2 and Co
Al2O3 and Zno
CuO and CO​

Answer 1

Answer:

Alkali metal oxide is most basic: Na2O

Aluminium oxide is amphoteric : Al2O3

Non metallic oxide is acidic: Cl2O7

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Answer 2

Explanation:

This exhibits the basic property of the compounds. Similarly reacts with the alkali to form salt and water, exhibiting acidic property. Example: Aluminium oxide. Like aluminium, many metals form amphoteric oxides or hydroxides such as zinc, copper, tin chromium and beryllium.