(a) Solution and suspension Solution 1. It is an example of homogeneous mixture. 2. Particle size less than 10 -10 m 3. Transparent 4. Solute particles can not be ltered. Solution pass easily through lter paper. Suspension1. It is an example of heterogeneous mixture. 2. Particle size greater team 10 -7 m 3. Opaque 4. Particles of suspension do not pass through lter paper. (b) Suspension and colloids Suspension 1. Heterogeneous 2. Particle size greater than 10 -7 m. 3. Opaque. 4. Particles are visible. 5. Particles of suspension settle at the bottom of the container. 6. Particles of suspension do not pass through lter paper. Colloid 1. Heterogeneous. 2. Particles size between 10 -10 to 10 -7 m. 3. Translucent. 4. Particles can be seen with the help of a powerful microscope. 5. Particles of colloids do not settle. 6. Colloidal particles pass easily through ordinary lter paper but do not pass through ultra lters.