i) Suspension solution
Explanation: The only type of solution that can be filtered is suspension solution. This property is attributed to their large particle sizes which allow them to be filtered.
Explanation: Solute particles are insoluble in the solvent and remain suspended in the solution. Thus we cannot see through them and hence they are opaque.
Explanation: Suspension solutions are heterogenous mixtures in which the solute particles are not uniformly distributed in the solvent. Only true solutions are heterogenous in nature.
iv) The suspension solutions have the biggest particles which have the size greater than 2000Å. True solutions have the least particle size followed by colloidal solution particles.
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