Which one of the following salts does not possess water of crystallization?
Potassium permanganate
Blue vitriol
Washing soda
Mohr's salt
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2022
Salts that do not possess water of crystallization are called anhydrous salts. Among the given options, Potassium permanganate (KMnO₄) is typically an anhydrous salt. Blue vitriol (CuSO₄·5H₂O), Washing soda (Na₂CO₃·10H₂O), and Mohr’s salt ((NH₄)₂Fe(SO₄)₂·6H₂O) are common examples of hydrated salts, meaning they contain a fixed number of water molecules (water of crystallization) associated with their crystal structure.