The amphoteric hydroxide is:

Question

Canvas Classes · Accepted Answer

Amphoteric hydroxide = reacts with both acids AND bases.

Step 1 — Check each hydroxide:

(1) : Reacts with HCl (acid): 
Also reacts with NaOH (base):  Amphoteric ✓

(2) : Only reacts with acids  purely basic ✗

(3) : Only reacts with acids  purely basic ✗

(4) : Only reacts with acids  purely basic ✗

Note: Be is a small, highly polarising cation  its hydroxide shows amphoteric character (similar to Al, Zn).

Answer: Option (1) —

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