106. Pick up the correct statement from the following :
A. An unconfined compression test is a special case of triaxial compression test
B. An unconfined compression test is a special case of direct shear test
C. The confining pressure is maximum during an unconfined compression test
D. The cylindrical specimen of a soil is subjected to major principal stress till it fails due to shearing along the plane of the failure.

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107. For testing a saturated clay for shear strength, the test recommended, is
A. direct shear test
B. triaxial compression test
C. unconfined compression test
D. all the above.

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108. On wetting, cohesive soils,
A. loose permeability
B. gain shear strength
C. loose elasticity
D. decrease their shear strength.

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109.  Cohesive soils are generally
A. plastic and also compressible
B. elastic and also compressible
C. plastic but incompressible
D. none of these.

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110. The angle of internal friction of clays, is usually
A. 0? to 5?
B. 5? to 20?
C. 20? to 30?
D. 30? to 45?.

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111.  The angle of internal friction is maxi-mum for
A. angular-grained loose sand
B. angular-grained dense sand
C. round-grained dense sand
D. round-grained loose sand

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112. The angle of internal friction, is least for
A. angular-grained loose sand
B. angular grained dense sand
C. round-grained loose sand
D. clays.

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