Question

Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
(a) What is the nature of oxide A2O3 ?
(b) What is the nature of oxide BO ?
(c) Name one metal like A.
(d) Name one metal like B.

Lakhmir Singh Chemistry Class 10

Answer 1

Given :

Metal A burns in air and form A2O3.

Metal B burns in air to form BO

Both the oxides can react with HCl as well as NaOH to give salt and water

(a) What is the nature of oxide A2O3 :

A2O3 is  amphoteric in nature .

b) What is the nature of oxide BO ?

BO is Amphoteric in nature

C) An example Of metal A is Aluminium

4Al+3O2----> 2Al2O3

D) Metal B is Zinc

2Zn +02---->2 ZnO

Answer 2

Answer:

Both are Amphrotic Substance