Question

The un-drained test is carried out on sample of clay, silt, and peat to determine _____________

(a) Shear Strength of natural ground and Sensitivity

(b) Pore pressure

(c) None of the mentioned

(d) All of the mentioned

I had been asked this question in a national level competition.

This intriguing question comes from Shear Strength of Cohesive Soil topic in section Shear Strength of Geotechnical Engineering I

Answer 1

The correct answer is (a) Shear Strength of natural ground and Sensitivity

For explanation I would say: The un-drained test is carried out on undisturbed sample of clay, silt and peat to determine the strength of the natural ground and also carried out on remoulded samples of clay to measure it its sensitivity.