Size of colloidal partical varies from (1) 10^?7 to 10^?9cm (2) 10^?9 to 10^?17cm (3) 10^?5 to 10^?7cm (4) 10^?4 to 10^?10cm

Answer: (3)

A Colloid is an intermediate between solution and suspension. It has particles with sizes between 2 to 1000 nanometers. A colloid is easily visible to the naked eye. Colloids can be distinguished from solutions using the Tyndall effect.

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