Civil Engineering Soil Mechanics & Foundation Mock test – 3 Welcome to your Soil Mechanics and Foundation Engineering Mock test - 3 Take an exciting test in Soil Mechanics and Foundation Engineering You have only 20 mins to complete the test (29 Questions) Wish you all the best!!! Name Email 1. If the unit weight of sand particles is 2.696 g/cc. and porosity in loose state is 44%, the critical hydraulic gradient for quick sand condition, is A. 0.91 B. 0.92 C. 0.93 D. 0.94 E. 0.952. A soil sample has passing 0.075 mm sieve = 60% liquid limit = 65% and plastic limit = 40%. The group index of the soil, is A. 5 B. 20 C. 40 D. none of these.3. The plasticity index is the numerical difference between A. liquid limit and plastic limit B. plastic limit and shrinkage limit C. liquid limit and shrinkage limit D. none of these.4. If dry density, water density and specific gravity of solids of a given soil sample are 1.6 g/cc, 1.84 g/cc and 2.56 respectively, the porosity of the soil sample, is A. 0.375 B. 0.370 C. 0.380 D. 0.3905. The specific gravity of sands, is approximately A. 1.6 B. 2.0 C. 2.2 D. 2.4 E. 2.66. If a soil undergoes a change in shape and volume by application of external loads over it, but recovers its shape and volume immediately after removal of the load, the property of the soil is said to be A. Resilience of soils B. Elasticity of soils C. Compressibility of soils D. None of these.7. The capillary rise of water A. depends upon the force responsible B. increases as the size of the soil particles increases C. decreases as the size of the soil particles decreases D. is less in wet soil than in dry soil.8. A sample of saturated soil has 30% water content and the specific gravity of soil grains is 2.6. The dry density of the soil mass in g/cm3, is A. 1.47 B. 1.82 C. 1.91 D. none of these.9. Fine sand possesses A. good plasticity B. limited plasticity C. reasonable plasticity D. clay.10. If the coefficients of volume change and compressibility of a soil sample are respectively 6.75 x 10-2 and 3 x 10-2, the void ratio of the soil sample, is A. 1.10 B. 1.15 C. 1.20 D. 1.2511. The compression resulting from a long term static load and consequent escape of pore water, is known as A. compaction B. consolidation C. swelling D. none of these.12. The maximum net pressure intensity causing shear failure of soil, is known A. safe bearing capacity B. net safe bearing capacity C. net ultimate bearing capacity D. ultimate bearing capacity.13. Through a point in a loaded soil, the principal stress is maximum on A. minor principal plane B. intermediate principal plane C. major principal plane D. none of these.14. Si particles A. show dilatancy B. swell when moist C. possess high strength when dry D. disintegrate easily.15. The passive earth pressure of a soil, is proportional to (where φ is the angle of internal friction of the soil.) A. tan (45° - φ) B. tan (45° + φ) C. tan^2 (45° - φ D. tan^2 (45° + φ)16. A stratum of clay 2 m thick will get consolidated 80% in 10 years. For the 80% consolidation of 8 m thick stratum of the same clay, the time required is A. 100 years B. 120 years C. 140 years D. 160 years17. Soil classification of composite soils, exclusively based on the particle size distribution, is known A. particle classification B. textural classification C. High Way Research Board classification D. unified soil classification.18. If the cohesive force, (c), is 1.5 t/m2, the density (γ) of the soil is 2.0 t/m3, factor of safety (F) is 1.5 and stability factor (Sn) is 0.05, the safe height of the Â§lope, is A. 5 metres B. 8 metres C. 10 metres D. 12 metres19. The ultimate bearing capacity of a soil, is A. total load on the bearing area B. safe load on the bearing area C. load at which soil fails D. load at which soil consolidates.20. If the back fill is having a uniform surcharge of intensity q per unit area, the lateral pressure will be A. q times the lateral pressure within the surface B. 1/q times the lateral pressure within the surface C. equal to a fill of height Z equal to q/r, where r is the density of the backfill D. none of these.21. The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2, the coefficient of compressibility is A. 0.01 B. 0.02 C. 0.05 D. 0.00122. The specific gravity of quartz, is A. 2.65 B. 2.72 C. 2.85 D. 2.9023. A moist soil sample weighing 108 g has a volume of 60 cc. If water content is 25% and value of G = 2.52, the void ratio is A. 0.55 B. 0.65 C. 0.75 D. 0.8024. The minimum centre to centre distance of friction piles of 1 m diameter, is A. 2 m B. 2 m to 3 m C. 3 m to 4 m D. 5 m25. The vane shear test is used for the in-situ determination of the undrained strength of the intact fully saturated A. sands B. clays C. gravels D. highly organic soils.26. Maximum size of clay particles, is : A. 0.002 mm B. 0.04 mm C. 0.06 mm D. 0.08 mm27. The maximum water content at which a reduction in water content does not cause a decrease in volume of a soil mass, is known A. liquid limit B. plastic limit C. shrinkage limit D. permeability limit.28. A moist soil sample of volume 60 cc. weighs 108 g and its dried weight is 86.4 g. If its absolute density is 2.52, the degree of saturation is A. 54% B. 64% C. 74% D. 84%29. The coefficient of curvature for a well graded soil, must be between A. 0.5 to 1.0 B. 1.0 to 3.0 C. 3.0 to 4.0 D. 4.0 to 5.0 Share to all