Question

The group index of a soil depends on ____________

(a) Liquid limit

(b) Plastic limit

(c) All of the mentioned

(d) None of the mentioned

This question was posed to me during a job interview.

The query is from Soils topic in section Classification of Soils of Geotechnical Engineering I

Answer 1

The correct option is (a) Liquid limit

The explanation is: Group index of soil usually varies by

i. Liquid limit

ii. Plastic limit

iii. Amount of material passing through the 75-micron IS sieve.