JEE Main · 2025 · 28 Jan 2025 · Shift 1 · Solutions

Elements P and Q form two types of non-volatile, non-ionizable compounds PQ and ${\mathrm{PQ}}_2$. When 1 g of PQ is dissolved in 50 g of solvent 'A', $\Delta {\mathrm{T}}_{\mathrm{b}}$ was 1.176 K while when 1 g of ${\mathrm{PQ}}_2$ is dissolved in 50 g of solvent 'A', …

Consider a solution of ${\mathrm{CO}}_2(\mathrm{g})$ dissolved in water in a closed container.

Which one of the following plots correctly represents variation of log (partial pressure of CO2 in vapour phase above water) [y-axis] with log (mole fraction of ${\mathrm{CO}}_2$ …

Given below are two statements:

Statement I: The Henry's law constant ${\mathrm{K}}_{\mathrm{H}}$ is constant with respect to variations in solution's concentration over the range for which the solutions is ideally dilute.
Statement II : ${\mathrm{K}}_{\mathrm{H}}$ does not diff …

The osmotic pressure of a living cell is 12 atm at 300 K. The strength of sodium chloride solution that is isotonic with the living cell at this temperature is $\_\_\_\_$ $\mathrm{g}{\mathrm{L}}^{-1}$. (Nearest integer)

Given: …

A substance 'X' (1.5 g) dissolved in 150 g of a solvent 'Y' (molar mass $=300\mathrm{g}{\mathrm{mol}}^{-1}$) led to an elevation of the boiling point by 0.5 K. The relative lowering in the vapour pressure of the solvent 'Y' is $\_\_\_\_$ $\times 10^{-2}$. (Nearest integer)
[Giv …

Which one of the following graphs accurately represents the plot of partial pressure of ${\mathrm{CS}}_2$ vs its mole fraction in a mixture of acetone and ${\mathrm{CS}}_2$ at constant temperature ?