Worksheets02/02/26-Civilwar-Overseer grade 1 -basic properties of soils 1
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Air content (ac) in soil is defined as:
Here , Va-volume of air
Vv-Volume of voids
V-Total volume
Vw-Volume of water
Vs-Volume of solids
a)
(Va / V) × 100
b)
(Vw / Vv) × 100
c)
(Va / Vv) × 100
d)
(Vs / Vv) × 100
2.
Percentage air voids (na) is:
Here ,Va-volume of air
Vv-Volume of voids
V-Total volume
Vw-Volume of water
Vs-Volume of solids
a)
(Va / Vv) × 100
b)
(Va / V) × 100
c)
(Vw / Vv) × 100
d)
(Vs / V) × 100
3.
Degree of saturation (S) is defined as:
a)
Percentage of total soil volume filled with water
b)
Percentage of void space filled with water
c)
Percentage of solids filled with water
d)
Ratio of air volume to void volume
4.
If S = 100% the correct statement is:
a)
No water is present
b)
No air is present in voids
c)
Soil is oven dry
d)
Air content becomes maximum
5.
As per soil state classification Degree of saturation ‘S’ between 50 and 75 indicates:
a)
Humid
b)
Damp
c)
Moist
d)
Wet
6.
Water content (w) is:
Va-volume of air
Vv-Volume of voids
Mw-mass of water
Ms-Mass of solids
Vw-Volume of water
Vs-Volume of solids
a)
(Ms / Mw)
b)
(Mw / Ms)
c)
(Vw / Vs)
d)
(Va / Vv)
7.
Which statement is TRUE about water content (w)?
a)
w = 0 indicates saturated soil
b)
w can never exceed 100%
c)
w = 0 indicates oven dry soil
d)
w > 0 indicates fully saturated soil only
8.
Bulk density or bulk unit weight considers:
a)
Only solids volume
b)
Only solids and water volume (no air)
c)
Solids, water and air (total volume)
d)
Only void volume
9.
A soil sample has Va = 30 cm³ and Vv = 120 cm³. The air content (ac) is:
a)
20%
b)
25%
c)
40%
d)
75%
10.
A soil sample has mass = 1800 kg and total volume = 1 m³. Find the bulk unit weight γ in kN/m³. Use 1 kg ≈ 9.81 N and 1 kN = 1000 N.
a)
9.81 kN/m³
b)
17.66 kN/m³
c)
18.00 kN/m³
d)
176.6 kN/m³
100 %