Salts are crystalline solids, having high melting point and boiling point. Which one of the following salts is insoluble in water?

Salts are crystalline solids, having high melting point and boiling point. Which one of the following salts is insoluble in water?

نمکیات کرسٹل ٹھوس ہیں ، جس میں پگھلنے کا مقام اور ابلتے ہوئے مقام ہیں۔ مندرجہ ذیل میں سے کون سا نمک پانی میں ناقابل تحلیل ہے؟
Explanation

Calcium carbonate (CaCO₃) is insoluble in water due to its strong ionic lattice and low solubility product.

In contrast, salts like sodium and potassium compounds are generally highly soluble in water.