Medium MCQ +4 / -1 PYQ · JEE Mains 2025

Assume a living cell with 0.9% (w/w) of glucose solution (aqueous). This cell is immersed in another solution having equal mole fraction of glucose and water.
(Consider the data upto first decimal place only)

The cell will :

  1. A shrink since solution is $0.45 \%(\omega / \omega)$ as a result of association of glucose molecules (due to hydrogen bonding)
  2. B shrink since solution is $0.5 \%(\omega / \omega)$
  3. C show no change in volume since solution is $0.9 \%(\omega / \omega)$
  4. D swell up since solution is $1 \%(\omega / \omega)$

Solution

<p>Living cell $=0.9 \mathrm{gm}$ in 100 gm of solution $\% \mathrm{w} / \mathrm{w}=0.9$</p> <p>Solution is have equal moles of glucose and water $=0.5$</p> <p>Weight of solution $=0.5 \times 180+0.5 \times 18=99 \mathrm{gm}$ $\% \mathrm{w} / \mathrm{w} \simeq 90 \%$</p> <p>Concentrated solution $=$ Cell will shrink</p>

About this question

Subject: Chemistry · Chapter: States of Matter · Topic: Gas Laws

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