A pair of amphoteric oxides from the following is

\(VO_2\) and \(Cr_2O_3\)

The answer is (4), \(VO_2\) and \(Cr_2O_3\).

Amphoteric oxides are oxides that can react with both acids and bases. \(VO_2\) and \(Cr_2O_3\) are both amphoteric oxides. They can react with acids to form salts, and they can react with bases to form hydroxides.

The other answer choices are not amphoteric oxides. \(VO\) and \(V_2O_5\) are acidic oxides, and \(CrO\) and \(Cr_2O_3\) are basic oxides.