Q.

An amphoteric oxide which can act like best oxidizing agent among the following is

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a

GeO2

b

PbO2

c

SnO2

d

CO2

answer is B.

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Detailed Solution

A) CO…Neutral.B) SiO…Exists at high temperature only.C) GeO…AcidicD) SnO, PbO….Amphoteric.E) CO2…Most acidic oxide of 14th groupF) SiO2…AcidicG) GeO2…Less acidicH) SnO2, PbO2….Amphoteric.I) Oxidizing power of PbO2>SnO2>GeO2>SiO2>CO2   Due to inert pair effect Pb4+ is unstable and thus acts as oxidant.
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