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؟
Answer: Calcium carbonate
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.

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