Q.

Which of the following oxide shows amphoteric nature-

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a

Al2O3

b

CaO

c

MgO

d

SO2

answer is D.

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Detailed Solution

The oxides that show both acidic and basic nature are called amphoteric oxides. Aluminium oxide which is metal oxide shows amphoteric nature. The metal oxides CaO & MgO show acidic nature whereas, non-metal oxide SO2 shows basic nature.

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