Question Detail
Question
Which one of the following soil types would have the highest proportion of colloidal particles?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Colloidal particles in soil are very small particles (less than 0.002 mm in diameter) that remain suspended in water. Clay soil is composed primarily of these tiny particles, giving it a high proportion of colloids. Sand has the largest particles, silt is intermediate, and loam is a mixture.
Hint
Which soil type feels sticky and can be molded when wet due to its tiny particle size?