please answer from quesion6 to 22 Q6 Pick up the correct statement from the following: Select one: a. The cylindrical sp

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please answer from quesion6 to 22
Q6 Pick up the correct statement from the following: Select one:
a. The cylindrical specimen of a soil is subjected to major
principal stress till it fails due to shearing along the plane of
the failure. b. An unconfined compression test is a special case of
triaxial compression test c. The confining pressure is maximum
during an unconfined compression test d. An unconfined compression
test is a special case of direct shear test
Q7 Unconfined compression test can be carried out on all types
of soils. Select one: True False
Q8 In a triaxial compression test when drainage is allowed
during the first stage (i. e. application of cell pressure) only
and not during the second stage (i.e. application of deviator
stress at constant cell pressure), the test is known as
consolidated undrained test Select one: True False
Q9 For a loose sand sample and a dense sand sample under a
similar normal stress, the residual shear strength is same but peak
strength of dense sand is greater than that of loose sand Select
one: True False
Q10 The total stress is equal to the difference between the
effective stress and pore water pressure. Select one: True
False
Q11 The strength of a soil is usually identified by Select one:
a. direct tensile stress b. direct compressive stress c. ultimate
shear stress d. effective stress
Q12 The angle of internal friction Select one: a. varies with
the density of sand b. depends upon the amount of interlocking c.
depends upon the particle shape and roughness d. all of the
above
Q13 The frictional resistance offered by sand is Select one: a.
sliding friction b. rolling friction c. resistance due to
interlocking d. all of these
Q14 For a sandy soil, the angle of internal friction is
30degree. If the major principal stress is 50 kN/m2 at failure, the
corresponding minor principal stress will be Select one: a. 12.2
kN/m2 b. 16.66 kN/m2 c. 20.8 kN/m2 d. 27.2 kN/m2
Q15 A dry sand specimen is tested in a triaxial test. The cell
pressure is 50 kPa and the deviator stress at failure is 100 kPa.
The angle of internal friction for the sand specimen is Select one:
a. 15 b. 30 c. 35 d. 40
Q16 For shear strength, triaxial shear test is suitable because
it can be performed under all three drainage conditions Select one:
True False
Q17 The precise measurement of the pore pressure and volume
change during the triaxial test is NOT possible Select one: True
False
Q18 In the triaxial test, the stress distribution on the failure
plane is NOT uniform Select one: True False
Q19 Isotropic consolidation of clay can be obtained in the
triaxial apparatus under equal all-round pressure. Select one: True
False
Q20 The shear strength in plastic undrained clay, is due to
Select one: a. inter-granular friction b. internal friction c.
cohesion d. none of these.
Q21 The shear strength in plastic undrained clay, is due to
Select one: a. inter-granular friction b. internal friction c.
cohesion d. none of these.
Q22 For Mohr-Coulomb envelope, Coulomb suggests that the
relationship between shear strength and normal stress is adequately
represented by the straight line Select one: True False