Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is different but peak strength is same
ultimate strength is same and also peak strength is same
ultimate strength is same but peak strength of dense sand is greater than that of loose sand
ultimate strength is same but peak

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Soil Mechanics and Foundation
The admixture of coarser particles like sand or silt to clay causes

decrease in liquid limit and no change in plasticity index
decrease in liquid limit and increase in plasticity index
decrease in both liquid limit and plasticity index
increase in both liquid limit and plasticity index

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Soil Mechanics and Foundation
Rise of water table above the ground surface causes

Increase in pore water pressure but decrease in total stress
Decrease in pore water pressure but increase in total stress
Equal decrease in pore water pressure and total stress
Equal increase in pore water pressure and total stress

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Soil Mechanics and Foundation
Which of the following statements is correct?

None of these
For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.
Uniformity coefficient represents the shape of the particle size distribution curve.
A soil is said to be well graded if it has most of the particles of about the same size

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