Objective Practice Test Soil Mechanics - Set 09 - ObjectiveBooks

Objective Practice Test Soil Mechanics - Set 09

Practice Test: Question Set - 09


1. The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing
    (A) Cohesion and effective angle of shearing resistance
    (B) Cohesion and effective unit weight of soil
    (C) Effective unit weight of soil and effective angle of shearing resistance
    (D) Effective angle of shearing resistance

2. A soil mass is said to be in plastic equilibrium if
    (A) It is stressed to maximum
    (B) It is on the verge of failure
    (C) It is in plastic stage
    (D) It starts flowing

3. Stoke's law states that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon
    (A) Shape of grain
    (B) Weight of grain
    (C) Size of grain
    (D) Shape, size and weight of grain

4. Pick up the correct statement from the following:
    (A) A soil having pH value more than 7 is an acidic soil
    (B) A soil having pH value less than 7 is an acidic soil
    (C) A soil having pH value more than 7 is an alkaline soil
    (D) A soil containing chemicals for the manufacture of Portland cement is preferred

5. Contact pressure beneath a rigid footing resting on cohesive soil is
    (A) Less at edges compared to middle
    (B) More at edges compared to middle
    (C) Uniform throughout
    (D) None of the above

6. The plasticity of fine soils may be assessed by means of
    (A) Dry strength test
    (B) Toughness test
    (C) Dilatancy test
    (D) All of these

7. Pick up the correct statement from the following:
    (A) Sandy clayloam contains highest percentage of sand
    (B) Silty clayloam contains highest percentage of silt
    (C) Stiff boulder clay offers maximum shear strength
    (D) Soft chalk carries least safe load

8. For general engineering purposes, soils are classified by
    (A) Particle size classification system
    (B) Textural classification system
    (C) High Way Research Board (HRB), classification system
    (D) Unified soil classification system

9. Water content of soil can
    (A) Never be greater than 100 %
    (B) Take values only from 0 % to 100 %
    (C) Be less than 0 %
    (D) Be greater than 100 %

10. Through a point in a loaded soil mass, there exists ‘n’ typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if ‘n’ is
    (A) 1
    (B) 2
    (C) 3
    (D) 4

11. Pick up the correct statement from the following:
    (A) Failure plane carries maximum shear stress
    (B) Failure plane does not carry maximum shear stress
    (C) Failure plane carries shear stress equal to maximum shear stress
    (D) None of these

12. The phreatic line in an earth dam may be
    (A) Circular
    (B) Elliptical
    (C) Parabolic
    (D) A straight line

13. If the voids of a soil mass are full of air only, the soil is termed as
    (A) Air entrained soil
    (B) Partially saturated soil
    (C) Dry soil
    (D) Dehydrated soil

14. On wetting, cohesive soils,
    (A) Loose permeability
    (B) Gain shear strength
    (C) Loose elasticity
    (D) Decrease their shear strength

15. 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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