Engineering :: Soil Mechanics and Foundations

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111.

Which of the following is highly permeable?

A.	Gravel	B.	Sand mixture
C.	Coarse sand	D.	Clay

112.

Which of the following is practically impermeable?

A.	Gravel	B.	Sand mixture
C.	Coarse sand	D.	Clay

113.

A sample of clay and a sample of sand have the same specific gravity and void ratio. Their pemeabilities will differ because

A.	their porosities will be different	B.	their densities will be different
C.	their degrees of saturation will be different	D.	the size ranges of their voids will be different

114.

The property of the soil mass which permits the seepage of water through its interconnecting voids, is called

A.	capillarity	B.	permeability
C.	porosity	D.	none of these

115.

The unit of coefficient of permeability is same as that of velocity.

Yes

116.

When applying Darcy's law to soils, it assumed that the

A.	soil is incompressible	B.	soil is homogeneous and isotropic
C.	flow conditions are laminar	D.	all of these

117.

The value of permeability

depends upon

does not depend upon

118.

Which of the following have an influence on the value of permeability?

A.	Grain size	B.	Void ratio
C.	Degree of saturation	D.	all of these

119.

If the direction of flow of water is parallel to the planes of stratification, then the permeability is

A.	2 to 10	B.	2 to 15
C.	2 to 20	D.	2 to 30

120.

The permeability of a given soil is

A.	directly proportional to the average grain size	B.	inversely proportional to the average grain size
C.	directly proportional to the square of the average grain size	D.	inversely proportional to the square of the average grain size