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Question

Which of the following oxides is/are not amphoteric in character?

A
CaO
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B
CO2
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C
SiO2
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D
SnO2
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Solution

The correct options are
A CO2
C SiO2
D CaO
CaO, CO2 and SiO2 when dissolved in water gives base ,hence they are basic oxides.

SnO2 do not react with water, so it is amphoteric.

Hence options A,B, & C are correct.

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