Same chapter3 marksDifficulty: Medium
The solubility of potassium nitrate at 30 °C is 45 g per 100 g of water. What mass of the salt will saturate 250 g of water at that temperature?
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3 marksDifficulty: Medium
Why is water called a universal solvent?
Original Khojo Papers practice question — not from a past board paper.
Answer
Water dissolves a greater number of substances than any other common liquid, because its molecules are polar and can pull apart the ions of most ionic compounds and form hydrogen bonds with many covalent ones.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The description is not literally true: fats, oils and many organic compounds do not dissolve in it.
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