`pi_(1),pi_(2),pi_(3)andpi_(4)`are the osmotic pressure of `5%((W)/(V))`solution of ure ,frutose ,sucrose andKCl respectively at certain temperatures.The correct order of their magnitude is

Options

A. `pi_(1)gtpi_(4)gtpi_(2)gtpi_(3)`
B. `pi_(1)gtpi_(4)gtpi_(2)gtpi_(3)`
C. `pi_(4)gtpi_(1)gtpi_(2)gtpi_(3)`
D. `pi_(4)gtpi_(1)gtpi_(3)gtpi_(2)`

Answer

C

Explanation

Moles of urea`=(5)/(60)` , Moles of fructose `=(5)/(180)`,
Moles of sucrose `=(5)/(342)` , Moles of KCl(effective)
`=2xx(5)/(74.5)=(5)/(37.25)`.