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Q.

All are amphoteric oxides among the following except

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a

GeO2

b

PbO2

c

SnO2

d

PbO

answer is A.

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Detailed Solution

A) CO…Neutral.

B) SiO…Exists at high temperature only.

C) GeO…Acidic

D) SnO, PbO….Amphoteric.

E) CO2…Most acidic oxide of 14th group

F) SiO2…Acidic

G) GeO2…Less acidic

H) SnO2, PbO2….Amphoteric.

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