81. Dry density of a soil sample is defined as the ratio of :
(A) Total mass of soil sample to total volume of soil sample
(B) Total mass of soil sample to volume of soil solids
(C) Mass of soil solids to total volume of soil sample

(D) Mass of soil solids to volume of soil solids

82. Which of the following can be the unit of coefficient of permeability?
(A) cm/sec ൯ 14/0:
(C) cm/sec (D) cm/sec?

83. Which of the following is an incorrect statement as per Mohr’s strength theory?
(A) Critical failure shear depends upon soil properties and normal stress

(B) Ultimate shear strength of soil is determined by the stresses on the potential

failure plane

(C) When soil material is subjected to three dimensional principal stresses the failure

criterion is dependent on intermediate principal stress

(D) The plot of shear stress and normal stress corresponding to failure is called

strength envelope

84. Ifa clay soil deposit is never been subjected to an effective pressure greater than existing

overburden pressure and is completely consolidated under existing pressure is called as:
(A) Under consolidated ൯) Pre-consolidated
(C) Over consolidated (D) Normally consolidated

85. Which of the following is a correct statement?
(A) ಗೂ dry density increases due to compaction permeability increases

(B) For same density, fine grained soil compacted dry of optimum are more permeable

than those compacted wet of optimum

(C) Shear strength of compacted soil is not dependent on dry density and moulding
water content.

(D) For same density, soil sample compacted wet of optimum shrink less than sample

compacted dry of optimum

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