(P₀ - P)/P₀ = mole fraction of solute (for non-volatile solute). This is Raoults law.
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JEE Main 2020 — Chemistry Physical Chemistry
medium
mcq
2020
Official previous-year question
Verified 30 May 2026.
Question
According to Raoults law, the relative lowering of vapor pressure of a solution is equal to:
Options
- AMole fraction of solute
- BMole fraction of solvent
- CMolality of solution
- DMolarity of solution
Solution
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