I. is a white powder
II. reacts with HCl.
III. reacts with NaOH
IV. is insoluble in water
A. alkaline
B. amphoteric
C. acidic
D. neutral
Correct Answer:
Option B – amphoteric
Explanation
An amphoteric oxide is an oxide that can act as either an acid or base in a reaction to produce a salt and water.
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