JEE Advance - Chemistry (2017 - Paper 2 Offline - No. 9)
The options(s) with only amphoteric oxides is (are)
$$C{r_2}{O_3},BeO,SnO,Sn{O_2}$$
$$C{r_2}{O_3},CrO,SnO,PbO$$
$$NO,{B_2}{O_3},PbO,Sn{O_2}$$
$$ZnO,A{l_2}{O_3},PbO,Pb{O_2}$$
Explanation
Compounds which dissolve in both acids and bases are known as amphoteric oxides.
Amphoteric oxides are :
Cr2O3, BeO, SnO, SnO2, ZnO, Al2O3 , PbO and PbO2 Whereas, NO is a neutral oxide, B2O3 is an acidic oxide and CrO is a basic oxide.
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