WorksheetsSM&FE-MCQ — UNIT 1 Worksheet
Total questions: 20
Worksheet time: 10mins
Which of the following best defines 'soil' in engineering?
Material below the ground surface
Naturally occurring aggregate of mineral grains
Anything found in the earth's crust
Man-made mixture for construction
Residual soils are formed due to:
Transport by water
Weathering of parent rock in place
Transport by wind
Transport by glacier
Soil is primarily composed of which three phases?
Solid, Liquid, Gas
Solid, Liquid, Vacuum
Solid, Water, Air
Liquid, Air, Vacuum
Cohesive soil mainly consists of?
Sands
Clay
Gravel
Silt
Cohesionless soil is also called?
Clay
Peat
Sandy soil
Silty soil
Void ratio (e) is defined as the ratio of:
Volume of voids to volume of solids
Volume of solids to volume of voids
Volume of voids to total volume
Volume of solids to total volume
Porosity (n) is the ratio of:
Weight of solids to total volume
Volume of solids to total volume
Volume of voids to total volume
Weight of voids to total volume
Degree of saturation (Sr) represents:
Ratio of volume of voids to total volume
Ratio of dry soil weight to water weight
Ratio of wet soil weight to dry soil weight
Ratio of volume of water to volume of voids
Water content (w) is expressed as the ratio of:
Weight of water to weight of solids
Volume of water to volume of solids
Weight of solids to total weight
Volume of solids to total volume
Specific gravity of soil grains (G) is the ratio of:
Weight of soil solids to volume of water
Volume of soil solids to volume of water
Weight of soil solids to weight of equal volume of water
Volume of soil solids to weight of water
Bulk unit weight (γ) is defined as:
Weight of water per unit volume
Weight of soil solids per unit volume
Weight of solids plus air per unit volume
Weight of total soil per unit volume
Formula relating void ratio (e) and porosity (n):
e=1−n
n=e
e=1+nn
n=1+ee
Density index (ID) is used to describe:
Water content
Specific gravity
Relative density of sand
Degree of saturation
Which soil classification system is standard in India?
Unified Soil Classification
ASTM Classification
AASHTO Classification
BIS Classification
Which of the following relation is correct? (where ac is air content and Sr is degree of saturation)
ac+Sr=1
ac−Sr=1
ac×Sr=1
ac/Sr=1
Dry unit weight (γd) of a soil is defined as the ratio of:
Total weight to total volume
Volume of solids to total volume
Weight of water to total volume
Weight of solids to total volume
The submerged unit weight (γ′) of a soil is related to the saturated unit weight (γsat) and unit weight of water (γw) by the formula:
γ′=γsat+γw
γ′=γsat/γw
γ′=γw
γ′=γsat−γw
For a soil mass to be considered fully saturated, the degree of saturation (Sr) must be:
Sr=0
0
Sr>100%
Sr=100%
The relationship between water content (w), specific gravity of solids (G), void ratio (e), and degree of saturation (Sr) is given by:
e=w·G·Sr
e=Sr·w·G
Sr=w·Ge
e=Sr·w·G (popularly known as Se=w·G)
If a soil has a bulk unit weight (γ) of 20 kN/m3 and a water content (w) of 10%, its dry unit weight (γd) in kN/m3 is:
18.18
20.00
22.00
19.00
