The size of particles in suspension, true solution and colloidal solution varies in the order:
The correct option is D (Suspension > Colloidal > True solution)
A suspension solution is cloudy and heterogeneous. The particles' size in suspension is larger than 10,000 nm which can be filtered out using filter paper.
Colloidal particles are relatively small in size compared to suspension. The particle size is 10-1000 nm. can be filtered out using filter paper.
A true solution is a homogeneous solution in which the size of solute particles has diameters less than 1nm. which is the smallest as compared to colloids and suspension.
Hence decreasing order of particle size in suspension, colloids, and true solution is Suspension > Colloidal > True solution.