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The option(s) with only amphoteric oxides is(are)
$$Cr_{2}O_{3},BeO,SnO,SnO_{2}$$
$$Cr_{2}O_{3},CrO,SnO,PbO$$
$$NO,B_{2}O_{3},PbO,SnO_{2}$$
$$ZnO,Al_{2}O_{3},PbO,PbO_{2}$$
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Arrangement
Miscellaneous LR
Data change over a period
Charts
DI Miscellaneous
Data Interpretation Basics
Puzzles
Truth Lie Concept
Special Charts
Quant Based LR
Table with Missing values
Routes And Networks
Maxima-Minima
Quant Based DI
DI with connected data sets
Games and Tournamnents
2D & 3D LR
Data Interpretation
Scheduling
Selection With Condition
Coins and Weights
Venn Diagrams
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