The hydrostatic pressure developed inside the cell on the cell wall due to endosmosis is called

The containers $\mathrm{X}$ and $\mathrm{Y}$ have $1$ litre of pure water and $1$ litre of $0.1 \mathrm{M}$ sugar solution, respectively. Which one of the following statements would be correct regarding their water potential $\left(\mathrm{\Psi }\right)$ and osmotic potential $\left(\mathrm{\Psi }s\right)?$

*Note: There were errors in original KVPY papers, and thus the options are modified here.

Assertion ($\mathrm{A}$): The flow of solvent molecules from a pure solvent to the solution through semipermeable membrane is osmosis.

Reason $\left(\mathrm{R}\right):$ Pure solvent molecules flow out of the solution through semipermeable membrane if a pressure larger than the osmotic pressure is applied to the solution side.

The correct answer is:

Assertion ($\mathrm{A}$): Pea seeds swell more on imbibition than wheat seeds.

Reason ($\mathrm{R}$): Proteins have a high imbibing capacity.

A solution of sucrose (molar mass$=342$) has been prepared by dissolving $68.4 \mathrm{g}$ sucrose in $1 \mathrm{kg}$ water.

${\mathrm{K}}_{\mathrm{f}} \mathrm{of} {\mathrm{H}}_2\mathrm{O}=1.86 \mathrm{K} \mathrm{kg} {\mathrm{mol}}^{-1}$ and vapour pressure of water at $298 \mathrm{K}$ is $0.024 \mathrm{atm}$.

The osmotic pressure of the solution at $298 \mathrm{K}$ is