Q.

Among the following oxides, how many of them are amphoteric oxides?a. B2O3     b. Al2O3     c. CaO     d. ZnO     e. Ga2O3     f. SnO2     g. PbO2     h. BeO     i. CuO     j. Fe2O3

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a

4

b

5

c

6

d

7

answer is C.

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Detailed Solution

Al2O3,ZnO,Ga2O3,SnO2,PbO2,BeO
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