(A) Colloidal solutions are heterogeneous in nature,not homogeneous. Therefore,the statement that 'Colloidal sols are homogeneous' is incorrect. Collo

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Colloidal sols are homogeneous.

(A) Colloidal solutions are heterogeneous in nature,not homogeneous. Therefore,the statement that 'Colloidal sols are homogeneous' is incorrect. Colloids do carry charge (positive or negative),they exhibit the Tyndall effect,and their particle size range is indeed between $10 \ \mathring{A}$ and $1000 \ \mathring{A}$ ($1 \ \text{nm}$ to $1000 \ \text{nm}$).