Soil Mechanics MCQs with Answers & Solutions — Page 3

During a hydrometer test for grain size distribution of fine-grained soil, the hydrometer reading versus timeIndex Properties

If consistency index of a soil is less than 0, then it would behave likeIndex Properties

If a soil has PI of 50 and clay fraction of 10%, then it will be considered asIndex Properties

If loose sand is subjected to drained shearing, then which of the following is applicable?Shear Strength

Which of the following soil classification symbol is not possible?Soil Classification

As per ISSCS, fine gravel is of sizeSoil Classification

As per USCS, a soil is classified as organic soil if ratio of LL after oven drying to that before oven drying isSoil Classification

The meniscus correction in hydrometer analysis isIndex Properties

The dispersing agent correction in hydrometer analysis isIndex Properties

If liquidity index of a soil is greater than 1, it would have consistency of aIndex Properties

The degree of saturation on ZAV line isCompaction

The soil fabric on the wet side of optimum is typicallyCompaction

The temperature correction in hydrometer analysis isIndex Properties

The tests needed for soil classification as per USCS is/areSoil Classification

If a soil is susceptible to swelling, it should be compacted atCompaction

In the sand replacement method for estimating field density, the standard sand used isIndex Properties

The pore water pressure on the phreatic surface isEffective Stress Principle

If porosity of a soil specimen is 50%, then the seepage velocity isPermeability

If the density of soil solids is 2.65 gm/cc and void ratio is 1, then the critical hydraulic gradient isSeepage Analysis

The shrinkage limit of a soil in the water content at which its consistency transitions fromIndex Properties

If the critical hydraulic gradient is 1, then the submerged unit weight isEffective Stress Principle

The Boussinesq’s equation assumes the soil to beStress Distribution in Soil

If the hydraulic gradient is 0.5, then the seepage force/volume isSeepage Analysis

A fine-grained soil with LL of 20 and PI of 6 will be classified asSoil Classification

The Poisson’s ratio for a saturated clayey soil under undrained loading condition isEffective Stress Principle

The time factor corresponding to average degree of consolidation of 90%, assuming constant increase in excess pore water pressure with depth at the…Consolidation

If the highest stress applied during a 1D consolidation test is 3.2 kg/cm² during the unloading stage, then the stress should be reduced toConsolidation

Engineering properties of a problematic CH soil has to improved. Which of the following ground improvement technique should be most preferrable?Ground Improvement Techniques

If the total stress = 100 kPa, hydrostatic pore water pressure = 30 kPa and excess pore water pressure during undrained shearing = 10 kPa, then the…Effective Stress Principle

Which statement is TRUE for ground improvement?Ground Improvement Techniques

Consider the following assumptions for slope stability analysis: i. Friction is fully mobilized ii. Effective stress analysis is adopted iii. Total…Stability of Slopes

Which of the following statement(s) is/are incorrect? i. The dry density is the bulk density of soil in dried condition ii. The void ratio of a…Index Properties

For a soil sample of unit weight γ, void ratio e, porosity n, degree of saturation S and water content w, which of the following relation is correct?Index Properties

The sieve analysis of a soil gave the following results: % passing 75μ sieve = 4, % retained on 4.75 mm sieve = 50, Coefficient of curvature = 2,…Soil Classification

The basic structural units of clay minerals composed:Clay Mineralogy

The piping failure in a hydraulic structure can be controlled bySeepage Analysis

A stratified soil deposit consists of profile as shown in the figure below. A surcharge load of 60 kN/m² is placed on the ground surface. The…Effective Stress Principle

A semi-infinite soil mass is loaded with a load intensity of 300 kN/m² at the surface. The vertical stress at a depth of 0.2 m is equal toStress Distribution in Soil

The following results were obtained from a consolidated-undrained test on a normally consolidated clay. The principal effective stresses of the…Shear Strength

A railway embankment of height 2 m was constructed at a Site A, having a clay layer 8 m thick with single drainage condition. A settlement of 5 cm…Consolidation

Which component represents the minor principal stress in the Mohr's circle of a direct shear test?Shear Strength

What is the shear strength in kPa in terms of effective stress on a plane within a saturated soil mass at a given point where the total normal stress…Shear Strength

The diameter-height ratio for the in situ vane isShear Strength

Following properties are found for a sandy soil: Void ratio at the loosest state = 1.2, Void ratio at the densest state = 0.4. Which one of the…Index Properties

If the plasticity index and the percentage of grain size finer than 2 microns of a clay sample are 30 and 10 respectively, then its activity ratio isIndex Properties

Consistency of cohesive soils is related to itsIndex Properties

The soil transported by wind is calledSoil Classification

The plasticity index is equal toIndex Properties

The property of the soil mass which permits the seepage of water through its interconnecting voids, is calledPermeability