Question

The ISCS classifies the soil in to __________

(a) 12 groups

(b) 15 groups

(c) 18 groups

(d) 16 groups

The question was posed to me in an international level competition.

This key question is from Soils in portion Classification of Soils of Geotechnical Engineering I

Answer 1

Correct option is (c) 18 groups

Explanation: The ISCS classifies the soil into 18 groups as against 15 groups of USCS.