The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above

The change of moisture content of soils, changes the
(A) Value of the angle of repose
(B) Amount of compaction required
(C) Cohesive strength of soil
(D) All the above
by

1 Answer

Answer :

Answer: Option D
by

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The side slope of formation in embankment /cutting depends on a) Shearing strength of soil and its angle of repose* b) Angle of repose c) Bearing capacity of the soil d) Optimum moisture content of the soil

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Last Answer : a) Shearing strength of soil and its angle of repose*

The maximum dry density upto which any soil can be compacted depends upon (A) Moisture content only (B) Amount of compaction energy only (C) Both moisture content and amount of compaction energy (D) None of the above

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Last Answer : (C) Both moisture content and amount of compaction energy

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 moisture

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Black cotton soil is unsuitable for foundations because its (A) Bearing capacity is low (B) Permeability is uncertain (C) Particles are cohesive (D) Property to undergo a volumetric change due to variation of moisture content

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Pick up the correct statement from the following: (A) O.M.C. refers to the moisture corresponding to the maximum point on the moisture content dry density curve (B) The line which shows moisture content dry density relation for soil containing a constant percentage of air voids, is known as air void line (C) The free fall of hammer for compaction is 30.5 cm (D) All the above

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The field density and field moisture content of a soil can be determined by 1. Core cutter method 2. Sand replacement method 3. Proctor compaction test 4. Modified proctor compaction test (a) 1, 2, 3 & 4 (b) 1 & 2 only (c) 2 & 3 only (d) 2 & 4 only

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On wetting, cohesive soils, (A) Loose permeability (B) Gain shear strength (C) Loose elasticity (D) Decrease their shear strength

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For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as (A) Dry of OMC and wet of OMC (B) Wet of OMC and dry of OMC (C) Wet of OMC and wet of OMC (D) Dry of OMC and dry of OMC where OMC is optimum moisture content

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Last Answer : Answer: Option B

The factor which affects the compaction, is (A) Moisture content (B) Compacting content (C) Method of compaction (D) All the above

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Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C) Effective angle of internal friction for a soil increases as state of compactness increases. (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.

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The infiltration capacity during rain storm, is considerably reduced due to (A) Surface detention (B) Soil moisture (C) Compaction due to rain (D) All the above

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A plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as (A) Natural slope line (B) Repose line (C) The line (D) All the above

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The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes (A) With the horizontal (B) With the vertical (C) With the perpendicular to the inclined plane of the soil (D) None of these

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Last Answer : Answer: Option A

The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5

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If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )

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Last Answer : Answer: Option A

Pick up the correct statement from the following: (A) In soils, the flow index indicates variation in shear strength with water content (B) Liquid limit minus plastic limit, is known as plasticity index of the soil (C) Plastic limit minus shrinkage limit, is known as shrinkage index of the soil (D) All the above

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Of the following statements about the major soil types, the incorrect one is : (a) alluvial soils are easy to plough (b) red soils are rich in phosphorus, nitrogen and lime content (c) laterite is typically a soil of tropical regions which receive heavy seasonal rainfall (d) black soil is highly retentive of moisture and very productive

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Quick sand is a (A) Type of sand (B) Flow condition occurring in cohesive soils (C) Flow condition occurring in cohesion-less soils (D) Flow condition occurring in both cohesive and cohesion-less soils

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Cohesive soils are generally (A) Plastic and also compressible (B) Elastic and also compressible (C) Plastic but incompressible (D) None of these

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The Westergaard analysis is used for (A) Sandy soils (B) Cohesive soils (C) Stratified soils (D) Clayey soils

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The most suitable method for drainage of fine grained cohesive soils is (A) Well point system (B) Vacuum method (C) Deep well system (D) Electro-osmosis method

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Soils containing organic matters (A) Are of spongy nature (B) Swell with decrease of moisture (C) Shrink with increase of moisture content (D) None of these

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Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus (C) Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils (D) All the above

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For the determination of shear strength parameters, c and , of soil in the laboratory, the test to be conducted will be (a) Triaxial compression test (b) Sieve analysis (c) Compaction test (d) Relative density test

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With the increase in the amount of compaction energy (A) Optimum water content increases but maximum dry density decreases (B) Optimum water content decreases but maximum dry density increases (C) Both optimum water content and maximum dry density increase (D) Both optimum water content and maximum dry density decrease

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The design of a retaining wall assumes that the retained earth (A) Is dry (B) Is free from moisture (C) Is not cohesive (D) All the above

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Settlement due to creep in soils is contingent on : (a) Primary consolidation (b) Secondary consolidation (c) Initial settlement (d) Compaction settlement

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When the compaction energy increases the compaction of soils: (a) Both of OMC and maximum dry density decrease (b) Both of OMC and maximum dry density increase (c) OMC decreases but maximum dry density decrease (c) OMC increases but maximum dry density increase

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Which one of the following statements is not correct? (A) The tangent of the angle of friction is equal to coefficient of friction (B) The angle of repose is equal to angle of friction (C) The tangent of the angle of repose is equal to coefficient of friction (D) The sine of the angle of repose is equal to coefficient to friction

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Tangent of angle of friction is equal to (A) Kinetic friction (B) Limiting friction (C) Angle of repose (D) Coefficient of friction

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The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of (A) Friction (B) Limiting friction (C) Repose (D) Kinematic friction

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The ratio of limiting friction and normal reaction is known as (A) Coefficient of friction (B) Angle of friction (C) Angle of repose (D) Sliding friction

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The angle that Coulomb's failure envelope makes with the horizontal is called (A) Cohesion (B) Angle of internal friction (C) Angle of repose (D) None of the above

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Quicksand is a) Moist sand containing a small percentage of clay b) Is a condition which generally occurs in coarse sands c) Is a condition in which cohesive properties of soil increase rapidly d) Is a condition in which a cohesion less soil loses its strength because of upward flow of water

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