Multiple choice Which one of the following sets represents acidic oxides only? SnO2, PbO2, SiO2 CO2, PbO2, SiO2 CO2, SiO2, GeO2 SnO2, SiO2, GeO2 CO2, SnO2, PbO2 Reveal answer Fill a bubble to check yourself C Correct answer Explanation CO2, SiO2, GeO2: All the three are acidic oxides.