question_answer

\[{{\pi }_{1}},{{\pi }_{2}},{{\pi }_{3}}\] and \[{{\pi }_{4}}\] atm are the osmotic pressures of 5% (mass/volume) solutions of urea, fructose, sucrose and \[KCl\] respectively at certain temperature. The correct order of their magnitudes is:

A) \[{{\pi }_{1}}>{{\pi }_{4}}>{{\pi }_{2}}>{{\pi }_{3}}\]  

B) \[{{\pi }_{1}}>{{\pi }_{4}}>{{\pi }_{2}}>{{\pi }_{3}}\]

C) \[{{\pi }_{4}}>{{\pi }_{1}}>{{\pi }_{2}}>{{\pi }_{3}}\]         

D) \[{{\pi }_{4}}>{{\pi }_{1}}>{{\pi }_{3}}>{{\pi }_{2}}\]