Soil Mechanics and Foundation
Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively.If other things remain constant, the coefficient of permeability

increases by 50%
increases by 25%
decreases by 33.3%
increases by 33.3%

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Soil Mechanics and Foundation
The shear strength of a soil

Is directly proportional to the angle of internal friction of the soil
Is inversely proportional to the angle of internal friction of the soil
Decreases with increase in normal stress
Decreases with decrease in normal stress

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Soil Mechanics and Foundation
If the water table rises upto ground surface, then the

total stress is reduced due to increase in pore water pressure only but effective stress does not change
effective stress is reduced due to decrease in total stress only but pore water pressure does not change
total stress is increased due to decrease in pore water pressure but effective stress does not change
effective stress is reduced due to increase in pore water pressure only but total stress does not change

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