21) During electrical stabilization of soil
(a) soil particles get flocculated to form large particles
(b) friction between particles increase
(c) fine grained soil is drained
(d) all the above
22) Inorganic soil with low compressibility are represented by
a) MH
b) SL
c) ML
d) CH
23) The unit weight of a soil at zero air voids depends on
a) specific gravity
b) water content
c) unit weight of water
d) All the above
24) Compaction of soil is measured in terms of
a) dry density
b) specific gravity
c) compressibility
d) permeability
25) Determination of coefficient of permeability by means of a field pumping test can be done for
a) soft clay
b) sandy soil
c) stiff clay
d) marine clay
26) In a earthen dam the phreatic line is
a) straight line
b) circular line
c) parabolic line
d) zigzag line
27) Darcy’s law for flow through soil is valid if Reynold’s number is less than
a) 4000
b) 3000
c) 2000
d) 1
28) Influence factor ‘I’ depends on
a) applied vertical load
b) type of soil
c) location of point with respect to load
d) soil modulus
29) When the degree of consolidation is 50%, the time factor is about
a) 0.2
b) 0.5
c) 1.0
d) 2.0
30) The unit of the coefficient of consolidation is
a) cm2/gm
b) cm2/sec
c) gm/cm2/sec
d) gm-cm/sec