Geo-technical Engineering PYQs, GPSC Civil Engineering

1. The adsorbed film of water

D) all of the above

2. In the classification of fine grained soils, ‘ML’ means

B) inorganic silts of low plasticity

3. To separate out the fines (silt and clay) fraction from the sand fraction the IS sieve used

C) 75 µ

4. Fine grained soil are sub divided into

A) Silt and clay

5. Sieve analysis test of sand is carried out to find its

C) Fineness modulus

6. The critical hydraulic gradient ic of a soil mass of specific gravity G and void ratio e is given by

D) ic = (G – 1)/(1 + e)

7. The pressure which is exerted by water on the soil through which it percolates, is called :

A) Seepage pressure

8. The discharge velocity through a soil sample was found out to be 2.4 × 10-4 m/s and the porosity was 40%. The seepage velocity through the sample will be

B) 6 × 10-4 m/s

9. A critical hydraulic gradient may occur when

C) flow takes place through the soil in the direction opposite to gravity

10. Proctor test of soil is carried out to find its :

C) max. dry density

11. Root time method is used to determine

B) Cv, coefficient of consolidation

12. When consolidation of saturated soil sample occurs, the degree of saturation

C) remain constant

13. The compression index of a soil

B) increases with an increase in the liquid limit

14. Coulomb’s equation for shear strength can be represented by (symbols have their usual meanings)

D) S = C + σtanφ

15. If correct value of cohesion of highly soft clay is to be determines, choose the correct type of test that should be carried out _______

A) Field vane shear test

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