Question

Which of the following is the accurate range for particle size corresponding to colloidal dimensions?

• A. 1mm – 1000 mm
• B. 1cm – 1000 cm
• C. 1nm – 1000 nm
• D. 0.001nm – 0.001 nm

Answer 1

The correct option is C 1nm – 1000 nm

A colloid is a heterogeneous mixture in which one insoluble substance is dispersed throughout another substance at the microscopic level. Sometimes, the dispersed substance alone is called the colloid but whenever we use the term “colloidal suspension”, it refers to both the dispersed phase as well as the dispersion medium.
The particle dimension should be within the 1 nm-1000 nm range.