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Soil Mechanics and Foundation - Interview Questions and Answers

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56. The clay mineral with the largest swelling and shrinkage characteristics is
A. kaolinite
B. illite
C. montmorillonite
D. none of the above
Explanation:
57. If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then
A. the liquid limit of soil always increases
B. the liquid limit of soil always decreases
C. the liquid limit of soil may increase
D. the liquid limit of soil may decrease
Explanation:
58. According to Atterberg, the soil is said to be of medium plasticity if the plasticity index PI is
A. 0 < PI < 7
B. 7
C. 17
D. PI>27
Explanation:
59. Uniformity coefficient of a soil is
A. always less than 1
B. always equal to 1
C. equal to or less than 1
D. equal to or gi eater than 1
Explanation:
60. Valid range for S, the degree of saturation of soil in percentage is
A. S>0
B. S<0
C. 0
D. 0 < S < 100
Explanation: