The osmotic pressure of equimolar solutions of urea, BaCl2 and AlCl3 will be in the order-
AlCl3 > BaCl2 > Urea
BaCl2 > AlCl3 > Urea
Urea > BaCl2 > AlCl3
BaCl2 > Urea > AlCl3
More the number of particles, more would be the osmotic pressure for equimolar solution
In equimolar solution of glucose, NaCl and BaCl2, the order of osmotic pressure is as follows: