### Geotechnical Engineering Set 12

This set of Geotechnical Engineering Multiple Choice Questions & Answers (MCQs) focuses on Geotechnical Engineering Set 12

Q1 | The value of compression index for a remoulded sample whose liquid limit is 50% is
• 0.028
• 0.28
• 36
• 0.036
Q2 | Fine sand possesses
• Good plasticity
• Limited plasticity
• Reasonable plasticity
• Clay
Q3 | Coarse grained soils are best compacted by a
• Drum roller
• Rubber tyred roller
• Sheep's foot roller
• Vibratory roller
Q4 | According to Atterberg, the soil is said to be of medium plasticity if the plasticity index PI is
• 0 < PI < 7
• 7< PI < 17
• 17 < PI <27
• PI > 27
Q5 | The coefficient of curvature for a well graded soil, must be between
• 0.5 to 1.0
• 1.0 to 3.0
• 3.0 to 4.0
• 4.0 to 5.0
Q6 | A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m² to 200 kN/m². If the effective stress is further increased from 200 kN/m² to 400 kN/m², then the settlement of the same clay is
• 10 mm
• 20 mm
• 40 mm
• None of the above
Q7 | The lateral earth pressure on a retaining wall
• Is equal to mass of the soil retained
• Proportional to the depth of the soil
• Proportional to the square of the depth of the soil
• Proportional to the internal friction of the soil
Q8 | If the permeability of a soil is 0.8 mm/sec, the type of soil is
• Gravel
• Sand
• Silt
• Clay
Q9 | A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3. If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is
• 11.10%
• 55.60%
• 69.60%
• None of these
Q10 | Which of the following soils has more plasticity index?
• Sand
• Silt
• Clay
• Gravel
Q11 | The liquid limit and plastic limit exist in
• Sandy soils
• Silty soils
• Gravel soils
• Clay soils
Q12 | For determining the moisture content of a soil sample, the following data is available Weight of container = 260 g, Weight of soil sample and = 320 g container, Weight of soil sample (dried) and = 310 g container. The moisture content of the soil sample, is
• 15%
• 18%
• 20%
• 25%
Q13 | For a homogeneous earth dam 50 m high having 2 m free broad, a flow net was constructed and the results were : Number of potential drops = 2.4 Number of flow channels = 0.4. If co - efficiency of permeability of the dam material is 3 × 10-3 cm3/sec, the discharge per metre length of dam, is
• 12 × 10- 5 m3/sec
• 24 × 10-3 m3/sec
• 6 × 10-5 m3/sec
• 24 × 10- 5 m3/sec
Q14 | The soil which contains finest grain particles, is
• Coarse sand
• Fine sand
• Silt
• Clay
Q15 | The minimum centre to centre distance of friction piles of 1 m diameter, is
• 2 m
• 2 m to 3 m
• 3 m to 4 m
• 5 m
Q16 | When drainage is permitted under initially applied normal stress only and full primarily consolidation is allowed to take place, the test is known as
• Quick test
• Drained test
• Consolidated undrained test
• None of these
Q17 | The liquidity index is defined as a ratio expressed as percentage of
• Plastic limit minus the natural water content, to its plasticity index
• Natural water content minus its plastic limit to its plasticity index
• Natural water content plus its plastic limit to its plasticity index
• Liquid limit minus the natural water content to the plasticity index
Q18 | Number of piles required to support a column, is
• 1
• 2
• 3
• 4
Q19 | According to the Indian Standards the specific gravity is the ratio of the unit weight of soil solids to that of water at a temperature of
• 17°C
• 23°C
• 27°C
• 30°C
Q20 | Maximum size of clay particles is:
• 0.002 mm
• 0.04 mm
• 0.06 mm
• 0.08 mm
Q21 | The compression resulting from a long term static load and consequent escape of pore water,is known as
• Compaction
• Consolidation
• Swelling
• None of these
Q22 | Minimum size of the particles of silt soil, is
• 0.002 mm
• 0.04 mm
• 0.06 mm
• 0.08 mm
Q23 | The ultimate Settlement of a soil is directly proportional to:
• Depth of the compressible soil strata
• Compressive index
• Both (a) and (b)
• None of these
Q24 | A pile is being driven with a drop hammer weighing 1800 kg and having a free fall of 1.00 m. If the penetration with last blow is 5 mm, the load carrying capacity of the pile, -according to the Engineering News formula, is
• 100 tonnes
• 50 tonnes
• 20 tonnes
• 10 tonnes
Q25 | Water formed transported soil is
• Alluvial
• Marine
• Lacustrine
• Loess