Question

In the colloidal state, the particle size ranges:

• A. below $1$ nm
• B. between $1$ nm to $100$ nm
• C. more than $100$ nm
• D. none of the above

Answer 1

The correct option is B between $1$ nm to $100$ nm

Colloidal particle has size in the range of $1$ to $1000$ nm.
Suspension has particle size of larger than $100$ nm.
True solution has particle size of less than $1$ nm.