# Darcy’s Law and Frost Action MCQs – Geotechnical Engineering

## Darcy’s Law and Frost Action MCQs

For which purpose study of seepage of water through the soil is important?

(A).  Drainage of soils

(B).  Stability of slopes

(C).  Ground water flow towards well

(D).  All of the mentioned

(E).  None of these

What is the effect of frost boils?

(A).  Formation of capillary saturation

(B).  Increased frost depth

(C).  Formation of pot holes

(D).  All of the mentioned

(E).  none of these

For the tube of 0.05 mm diameter at 4°c, how much is the capillary tension?

(A).  5.45 KN/m3

(B).  0.617 KN/m3

(C).  6.05 KN/m3

(D).  3.00 KN/m3

(E).  none of these

On what the temperature is dependent, at which the soil freezes in the pores of soil?

(A).  Saturation

(B).  Frost action

(C).  Pore size

(D).  Capillary tension

(E).  none of these

Darcy’s law is defined by____

(A).  q=KA

(B).  q=K/A

(C).  q=K i/A

(D).  q=K i A

(E).  None of these

To the frost action, the silt soils are more susceptible than what?

(A).  Gravel soil

(B).  Sand soil and Clayey soil

(C).  None of the mentioned

(D).  All of the mentioned

(E).  none of these

How is the frost heave defined?

(A).  Freezing of water in the soil

(B).  The Rise of ground water surface

(C).  Increase in volume because of freezing

(D).  None of the mentioned

(E).  none of these

Which of the following types of soils are prone to frost action?

(A).  Clay

(B).  Sand and Silt

(C).  None of the mentioned

(D).  All of the mentioned

(E).  none of these

What will be the expansion of the soil in the saturated soil, if the void ratio is 40%?

(A).  3.6 %

(B).  2.3 %

(C).  5 %

(D).  4 %

(E).  none of these

In the soil the types of water flow are?

(A).  None of the mentioned

(B).  Linear flow

(C).  Turbulent flow and Laminar flow

(D).  All of the mentioned

(E).  None of these

In terms of ____________ the Coefficient of permeability or simple permeability is stated.

(A).  cm/sec

(B).  m/day

(C).  feet/day

(D).  all of the mentioned

(E).  None of these

What is the ground surface called up to which the water freezes?

(A).  Frost line

(B).  Frost boil

(C).  Frost heave

(D).  Ice lenses

(E).  none of these

The stiff clays is ______________.

(A).  Least permeable

(B).  Highly permeable

(C).  Partially permeable

(D).  None of the mentioned

(E).  None of these

Fluid particles travel in the turbulent flow by which method?

(A).  Twisting

(B).  Definite path

(C).  Re-crossing

(D).  Crossing

(E).  None of these

Only for _____ we use Darcy’s law

(A).  Hydraulic flow

(B).  Turbulent flow

(C).  Laminar flow

(D).  All of the mentioned

(E).  None of these

The Gravels are _____.

(A).  Partially permeable

(B).  Least permeable

(C).  Highly permeable

(D).  All of the mentioned

(E).  None of these

More than what a well-graded soil is called frost susceptible?

(A).  3 % of the particles are smaller than 0.002 mm

(B).  10 % of the particles are smaller than 0.002 mm

(C).  3 % of the particles are smaller than 0.005 mm

(D).  10 % of the particles are smaller than 0.005 mm

(E).  none of these

Who studied first the law of flow of water through the soil?

(A).  Taylor

(B).  Lambe

(C).  Darcy

(D).  Khosla

(E).  None of these

What is the coefficient of permeability of fine sand?

(A). 5×10-2 to 1×10-3

(B). 1×10-6 and smaller

(C). 1×10-2 to 5×10-3

(D).  1.0 and greater

(E).  None of these

To prevent the deep frost penetration in the ground surface in a building, what action is used?

(A).  Removing frost susceptible soil

(B).  Interposing a pervious gravel blanket

(C).  Providing proper drainage

(D).  Placing insulating blankets of the gravel and the sand

(E).  none of these

For the making of ice lens, the Soil possesses what?

(A).  High capillarity

(B).  High porosity

(C).  Low moisture content

(D).  All of the mentioned

(E).  none of these

The Darcy’s law can be used, if it is equal to or less than ______

(A).  1

(B).  0

(C).  0.1

(D).  2

(E).  None of these