Question:medium

Vapour pressure of pure 'A' is 70 mm of Hg at $25^{\circ}C$. It forms an ideal solution with 'B' in which mole fraction of A is 0.8. If the vapour pressure of the solution is 84 mm of Hg at $25^{\circ}C$, the vapour pressure of pure 'B' at $25^{\circ}C$ is

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Raoult's Law: $P_{\text{total}} = P_A + P_B$. Always remember $X_A + X_B = 1$.

Updated On: Apr 10, 2026

28 mm
56 mm
70 mm
140 mm

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The Correct Option is D

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Questions Asked in MET exam

If $f(x) = \begin{cases} x, & 0 \le x \le 1 \\ 2x - 1, & 1<x \end{cases}$, then

MET - 2019
Continuity

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