31. Toughness index is defined as the ratio of
a) plasticity index to consistency index
b) plasticity index to flow index
c) liquidity index to flow index
d) consistency index to liquidity index
Ans:b
32. If the plasticity index of a soil mass is zero, the soil is
a) sand
b) silt
c) clay
d) clayey silt
Ans:a
33. The admixture of coarser particles like sand or silt to clay causes
a) decrease in liquid limit and increase in plasticity index
b) decrease in liquid limit and no change in plasticity index
c) decrease in both liquid limit and plasticity index
d) increase in both liquid limit and plasticity index
Ans:c
34. Select the correct statement.
a) A uniform soil has more strength and stability than a non-uniform soil.
b) A uniform soil has less strength and stability than a non-uniform soil.
c) Uniformity coefficient does not affect strength and stability.
d) Uniformity coefficient of a poorly graded soil is more than that of a well graded soil.
Ans:b
35. The water content of soil, which represents the boundary between plastic state and liquid state, is known as
a) liquid limit
b) plastic limit
c) shrinkage limit
d) plasticity index
Ans:a
36. Which of the following soils has more plasticity index ?
a) sand
b) silt
c) clay
d) gravel
Ans:c
37. At liquid limit, all soils possess
a) same shear strength of small magni-tude
b) same shear strength of large magni-tude
c) different shear strengths of small magnitude
d) different shear strengths of large magnitude
Ans:a
38. If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then
a) the liquid limit of soil always increases
b) the liquid limit of soil always decreases
c) the liquid limit of soil may increase
d) the liquid limit of soil may decrease
Ans:a
39. According to IS classification, the range of silt size particles is
a) 4.75 mm to 2.00 mm
b) 2.00 mm to 0.425 mm
c) 0.425 mm to 0.075 mm
d) 0.075 mm to 0.002 mm
Ans:d
40. Highway Research Board (HRB) classification of soils is based on
a) particle size composition
b) plasticity characteristics
c) both particle size composition and plasticity characteristics
d) none of the above
Ans:c
Read More Soil Mechanics and Foundation Engineering Questions:
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a) plasticity index to consistency index
b) plasticity index to flow index
c) liquidity index to flow index
d) consistency index to liquidity index
Ans:b
32. If the plasticity index of a soil mass is zero, the soil is
a) sand
b) silt
c) clay
d) clayey silt
Ans:a
33. The admixture of coarser particles like sand or silt to clay causes
a) decrease in liquid limit and increase in plasticity index
b) decrease in liquid limit and no change in plasticity index
c) decrease in both liquid limit and plasticity index
d) increase in both liquid limit and plasticity index
Ans:c
34. Select the correct statement.
a) A uniform soil has more strength and stability than a non-uniform soil.
b) A uniform soil has less strength and stability than a non-uniform soil.
c) Uniformity coefficient does not affect strength and stability.
d) Uniformity coefficient of a poorly graded soil is more than that of a well graded soil.
Ans:b
35. The water content of soil, which represents the boundary between plastic state and liquid state, is known as
a) liquid limit
b) plastic limit
c) shrinkage limit
d) plasticity index
Ans:a
36. Which of the following soils has more plasticity index ?
a) sand
b) silt
c) clay
d) gravel
Ans:c
37. At liquid limit, all soils possess
a) same shear strength of small magni-tude
b) same shear strength of large magni-tude
c) different shear strengths of small magnitude
d) different shear strengths of large magnitude
Ans:a
38. If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then
a) the liquid limit of soil always increases
b) the liquid limit of soil always decreases
c) the liquid limit of soil may increase
d) the liquid limit of soil may decrease
Ans:a
39. According to IS classification, the range of silt size particles is
a) 4.75 mm to 2.00 mm
b) 2.00 mm to 0.425 mm
c) 0.425 mm to 0.075 mm
d) 0.075 mm to 0.002 mm
Ans:d
40. Highway Research Board (HRB) classification of soils is based on
a) particle size composition
b) plasticity characteristics
c) both particle size composition and plasticity characteristics
d) none of the above
Ans:c
Read More Soil Mechanics and Foundation Engineering Questions:
Part1 Part2 Part3 Part4 Part5 Part6 Part7 Part8 Part9 Part10
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