CNST-2420 Exam Questions and
Answers (Latest Update 2026)
Soil and rock consist essentially of the same matter. True or False? -
correct answer ✅True
In the commonly used soil classification system, sand and silt are
classified as
a. coarse-grained soils
b. fine-grained soils
c. organic soils
d. inorganic soils
e. none of the above -
correct answer ✅none of the above
The four commonly used classifications of soils arranged in order of
decreasing particle size are -
correct answer ✅gravel, sand, silt, and clay
Which of the following statements is correct?
a. Gravel particles have a platelike shape.
b. Sand particles have a platelike shape.
,CNST-2420 Exam Questions and
Answers (Latest Update 2026)
c. Silt particles have a platelike shape.
d. Clay particles have a platelike shape. -
correct answer ✅Clay particles have a platelike shape
Cohesive soils are those in which the dry soil particles tend to
separate from each other when mixed with a small amount of
water. True or False? -
correct answer ✅False
To obtain soil-sampling tubes from below ground, which soil-testing
method is commonly used? -
correct answer ✅Test boring method
During soil testing, soil samples are obtained from -
correct answer ✅several locations on the site and from several
depths below ground
All testing of soil samples is generally done at the site
a. because modern soil sampling equipment is fully equipped with
soil testing facility.
, CNST-2420 Exam Questions and
Answers (Latest Update 2026)
b. because the delay in bringing soil samples to the laboratory
falsifies test results.
c. because the vibration of soil samples caused by transportation
falsifies test results.
d. all of the above
e. none of the above -
correct answer ✅none of the above
In terms of soil behavior in earthquakes, building codes classify a
construction site based on soil conditions. The primary property of
soil that is used in this classification is -
correct answer ✅the stiffness/density of soil
The bearing capacity of a soil refers to
a. the density of soil
b. the modulus of elasticity of soil
c. the compressive strength of soil
d. whether the soil is native to the site
e. none of the above -
correct answer ✅none of the above
Answers (Latest Update 2026)
Soil and rock consist essentially of the same matter. True or False? -
correct answer ✅True
In the commonly used soil classification system, sand and silt are
classified as
a. coarse-grained soils
b. fine-grained soils
c. organic soils
d. inorganic soils
e. none of the above -
correct answer ✅none of the above
The four commonly used classifications of soils arranged in order of
decreasing particle size are -
correct answer ✅gravel, sand, silt, and clay
Which of the following statements is correct?
a. Gravel particles have a platelike shape.
b. Sand particles have a platelike shape.
,CNST-2420 Exam Questions and
Answers (Latest Update 2026)
c. Silt particles have a platelike shape.
d. Clay particles have a platelike shape. -
correct answer ✅Clay particles have a platelike shape
Cohesive soils are those in which the dry soil particles tend to
separate from each other when mixed with a small amount of
water. True or False? -
correct answer ✅False
To obtain soil-sampling tubes from below ground, which soil-testing
method is commonly used? -
correct answer ✅Test boring method
During soil testing, soil samples are obtained from -
correct answer ✅several locations on the site and from several
depths below ground
All testing of soil samples is generally done at the site
a. because modern soil sampling equipment is fully equipped with
soil testing facility.
, CNST-2420 Exam Questions and
Answers (Latest Update 2026)
b. because the delay in bringing soil samples to the laboratory
falsifies test results.
c. because the vibration of soil samples caused by transportation
falsifies test results.
d. all of the above
e. none of the above -
correct answer ✅none of the above
In terms of soil behavior in earthquakes, building codes classify a
construction site based on soil conditions. The primary property of
soil that is used in this classification is -
correct answer ✅the stiffness/density of soil
The bearing capacity of a soil refers to
a. the density of soil
b. the modulus of elasticity of soil
c. the compressive strength of soil
d. whether the soil is native to the site
e. none of the above -
correct answer ✅none of the above
