Question:
The hydroxide of alkaline earth metal not soluble in water is:
The hydroxide of alkaline earth metal not soluble in water is:
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Solubility increases down the group — Be is least soluble.
Updated On: Apr 14, 2026
- magnesium hydroxide
- calcium hydroxide
- beryllium hydroxide
- barium hydroxide
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Solubility of group 2 hydroxides increases down the group.
Step 1: \[ \mathrm{Be(OH)_2} \text{ is amphoteric and insoluble} \]
Step 2: \[ \mathrm{Mg(OH)_2} \text{ slightly soluble},\quad \mathrm{Ca(OH)_2}, \mathrm{Ba(OH)_2} \text{ more soluble} \] \[ \therefore \text{correct answer = } \mathrm{Be(OH)_2} \]
Step 1: \[ \mathrm{Be(OH)_2} \text{ is amphoteric and insoluble} \]
Step 2: \[ \mathrm{Mg(OH)_2} \text{ slightly soluble},\quad \mathrm{Ca(OH)_2}, \mathrm{Ba(OH)_2} \text{ more soluble} \] \[ \therefore \text{correct answer = } \mathrm{Be(OH)_2} \]
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