Q.

π1,π2,π3 and π4 are the osmotic pressures of 5% (WV) solutions of urea, fructose, sucrose and KCl respectively at certain temperatures. The correct order of their magnitude is

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π1>π4>π2>π3

π1<π4<π2<π3

π4>π1>π2>π3

π4>π1>π3>π2

answer is C.

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Detailed Solution

Moles of urea =560; Moles of fructose =5180;Moles of sucrose =5342; Moles of KCl (effective)=2×574.5=537.25Osmotic pressure is a colligative property ,hence it depends on number of solute particles.As the number of moles increases osmotic pressure increases.

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