1(iv)
The metal hydroxide which reacts with both acids and alkalis to form salt and water is:
- (a)Calcium hydroxide
- (b)Magnesium hydroxide
- (c)Aluminium hydroxide
- (d)Ferric hydroxide
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Aluminium hydroxide
Reason — As Al(OH)3 is amphoteric in nature, it can generate salt and water as well as behave as a base with a strong acid.