Worksheets19/01/26-Civilwar-Overseer Grade 1-Geotech. Topics
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The red colour of laterite soil is mainly due to the presence of
a)
Calcium carbonate
b)
Silica
c)
Iron oxides
d)
Organic matter
2.
Loam soil is best suited for agriculture because it
a)
Is fully cohesive
b)
Has equal clay content and silt
c)
Balances drainage and moisture retention
d)
Has zero voids
3.
Sudden settlement upon wetting is a serious engineering risk associated with
a)
Laterite soil
b)
Loess soil
c)
Bentonite
d)
Hard pan soil
4.
Caliche soil is commonly found in which climatic condition?
a)
Humid tropical regions
b)
Glacial regions
c)
Arid and semi-arid regions
d)
Coastal marshes
5.
Which property makes bentonite suitable for use as drilling mud?
a)
High permeability
b)
Low swelling capacity
c)
Very high swelling capacity
d)
Granular structure
6.
Hard pan soil mainly affects construction by causing
a)
Excessive swelling
b)
High compressibility
c)
Poor drainage and excavation difficulty
d)
Soil liquefaction
7.
Which organic soil is extremely compressible and unsuitable for foundations without treatment?
a)
Humus
b)
Cumulose soil
c)
Peat
d)
Muck
8.
Which soil condition represents a two-phase system?
a)
Partially saturated soil
b)
Fully saturated soil
c)
Undisturbed natural soil
d)
Clayey soil
9.
The void ratio (e) of a soil can never be equal to zero because
a)
Soil always contains water
b)
Soil particles are cohesive
c)
Soil without voids cannot exist
d)
Air weight is neglected
10.
The relationship between porosity (n) and void ratio (e) is
a)
n = 1 − e
b)
n = e × (1 + e)
c)
n = e / (1 + e)
d)
e = n × (1 + n)
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