79 Soil Mechanics McQ Chapter Wise Online Test of 25 Question #5 Soil Mechanics McQ Chapter Wise McQ online Test of 25 Question for PSC, NEC, UPSC, SSC and Many more. 1 / 25 1. The coefficient of permeability of a soil A. increases with a increase in temperature B. increases with a decrease in temperature C. increases with a decrease in unit weight of water D. decreases with an increase in void ratio 2 / 25 2. What is the factor not affecting permeability? A. Size of soil particle B. Specific surface area of particles C. Shape of soil particle D. Type of soil 3 / 25 3. Compaction of soil is aimed at A. Decreasing dry density B. Increasing porosity C. Decreasing void ratio D. Decreasing shear strength 4 / 25 4. The compressibility of clays, is caused due to: A. expulsion of double layer water from in between the grains B. slipping of particles to new positions of greater density C. bending of particles as elastic sheets D. all the above 5 / 25 5. Optimum moisture content for silt is A. 5% B. 10% C. 15% D. 20% 6 / 25 6. . The maximum dry density occurs at a particular water content which is known as A. minimum water content B. maximum water content C. optimum water content D. none of above 7 / 25 7. Standard proctor test is used for determining A. Optimum moisture content (OMC) B. Void ratio C. Coefficient of consolidation D. Pavement thickness 8 / 25 8. At optimum water content, soil has A. Minimum density B. Maximum density C. No weight D. No density 9 / 25 9. If the bulk density of the soil is ρ and water content ω, then dry density of the soil, is A. 1 + ω / ρ B. 1+𝜌 / ω C. 𝜌 /1+ω D. 𝑤 / 1+𝜌 10 / 25 10. W is the weight of soil having a moisture content ω. If V is the volume of proctor’s mould, the dry density of the soil is A. 𝑊𝑉 / (1+𝑤) B. 𝑉 / 𝑊(1+𝑤) C. 𝑊 / 𝑉(1+𝑤) D. 𝑉(1+𝑤) / w 11 / 25 11. Fundamental relationship between dry density (γd), bulk density (γ) and water content (ω), is : A. 𝛾 = 𝛾𝑑 / 1+ω B. 𝛾𝑑 = 𝛾 / 1+ω C. 𝑤 = 𝛾 / 1+𝑑 D. 𝑤 = 𝛾 / 1−𝛾𝑑 12 / 25 12. Which of the following is a factor that affect a compaction of soil? A. Moisture content of soil B. The compaction effort C. Both A and B D. None of above 13 / 25 13. The factor which affects the compaction, is A. moisture content B. compacting content C. method of compaction D. All the above 14 / 25 14. Pick up the incorrect statement from the following: A. Compaction has no effect on the structure of a soil B. Permeability decreases with increase in the dry density of a compacted soil C. A wet side compacted soil is more compressible than a dry side compacted soil D. Dry side compaction soils swell more when given access to moistureDry side compaction soils swell more when given access to moisture 15 / 25 15. 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 16 / 25 16. If the shearing stress is zero on two planes, then the angle between the two planes is A. 45° B. 90° C. 135° D. 180° 17 / 25 17. 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 18 / 25 18. The equation τ = C + σ tan φ is given by A. Rankine B. Coulomb C. Culaman D. Mohr 19 / 25 19. The shear strength of a soil A. increases with an increase in the normal stress B. is proportional to the cohesion of the soil C. is generally known as the strength of the soil D. all the above 20 / 25 20. The Mohr’s straight theory is based on the following fact : A. Material fails essentially by shear B. Ultimate strength of the material is determined by the stress in the plane of slip C. Failure criterion is independent of the intermediate principal stress D. All the above 21 / 25 21. Depending upon the properties of a material, the failure envelope may A. be either straight or curved B. pass through the origin of stress C. intersect the shear stress axis D. all the above 22 / 25 22. The angle that Coulomb’s failure Envelope makes with horizontal is called? A. cohesion B. angle of internal friction C. angle of repose D. none of the above 23 / 25 23. The shearing strength of a cohesion-less soil depends upon A. dry density B. rate of loading C. confining pressure D. nature of loading 24 / 25 24. On wetting, cohesive soils, A. loose permeability B. gain shear strength C. loose elasticity D. decrease their shear strength 25 / 25 25. The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to A. 30° B. 45° C. 60° D. 90° Your score is The average score is 65% 0% Restart quiz Exit civil engineermcqcivilmock testnecpscsoil mechanics mcqupsc
