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If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is



Options:
A .  1.10
B .  1.15
C .  1.20
D .  1.25
E .  1.30
Answer: Option D

Coeff.compressibility = Coeff.volume change/(1 + e).


(1 + e) = Coeff.volume change/Coeff.compressibility.


e = (Coeff.volume change/Coeff.compressibility) - 1.


e = ((6.75 x 10-2)/(3 x 10-2)) - 1.


e = 2.25 - 1.


e = 1.25.




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