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Civil Engineering :: Soil Mechanics and Foundation

  1. Which of the following statements is correct?

  2. A.

     Uniformity coefficient represents the shape of the particle size distribution curve.

    B.

     For a well graded soil, both uniformity coefficient and coefficient of curvature are nearly unity.

    C.

     A soil is said to be well graded if it has most of the particles of about the same size

    D.

     none of the above


  3. In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear

  4. A.

     decreases

    B.

     increases

    C.

     remains unchanged

    D.

     first increases and then decreases


  5. The effect of cohesion on a soil is to

  6. A.

     reduce both the active earth pressure intensity and passive earth pressure intensity

    B.

     increase both the active earth pressure intensity and passive earth pressure intensity

    C.

     reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity

    D.

     increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99]


  7. The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in

  8. A.

     the principle of test

    B.

     the method of taking observations

    C.

     the method of preparation of soil suspension

    D.

     all of the above


  9. Rise of water table above the ground surface causes

  10. A.

     Equal increase in pore water pressure and total stress

    B.

     Equal decrease in pore water pressure and total stress

    C.

     Increase in pore water pressure but decrease in total stress

    D.

     Decrease in pore water pressure but increase in total stress


  11. Shear strength of a soil is a unique function of

  12. A.

     effective stress only

    B.

     total stress only

    C.

     both effective stress and total stress

    D.

     none of the above


  13. If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is

  14. A.

     40%

    B.

     60%

    C.

     80%

    D.

     100%


  15. Water content of soil can

  16. A.

     never be greater than 100 %

    B.

     take values only from 0 % to 100 %

    C.

     be less than 0 %

    D.

     be greater than 100 %


  17. Compressibility of sandy soils is

  18. A.

     almost equal to that of clayey soils

    B.

     much greater than that of clayey soils

    C.

     much less than that of clayey soils

    D.

     none of the above


  19. A fully saturated soil is said to be

  20. A.

     one phase system

    B.

     two phase system with soil and air

    C.

     two phase system with soil and water

    D.

     three phase system