Q. Select the incorrect statement _____?
a. Effective cohesion of a soil can never have a negative value
b. Effective angle of internal friction for coarse grained soils is rarely below 30°
c. Effective angle of internal friction for a soil increases as state of compact-ness increases
d. Effective angle of internal friction is a complicated function of mineralogy and clay size content
No explanation is available for this question!
