Question

The diameter of coarse-grained soils having single grained structure is ____________

(a) <0.002 mm

(b) >0.002 mm

(c) =0.002 mm

(d) ≥0.002 mm

I had been asked this question in final exam.

I'm obligated to ask this question of Single Grained and Honey Comb Structure in chapter Soil Structure and Clay Minerology of Geotechnical Engineering I

Answer 1

Right answer is (b) >0.002 mm

Easiest explanation: Coarse-grained soil of diameter >0.002 mm settle out of suspension in water as individual grains independently of the grain.