In a soil specimen, the total stress, effective stress, hydr

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11

M: +1.00/-0.33

In a soil specimen, the total stress, effective stress, hydraulic gradient and critical hydraulic gradient are σ, σ’, i and i_c, respectively. For initiation of quicksand condition, which one of the following statement is TRUE?

[GATE CE 2019 Set 1]

A σ’ = 0 and i ≠ ic

B σ = 0 and i = ic

C σ ‘ ≠ 0 and i ≠ ic

D σ’ = 0 and i = ic