MCQ
20261.
The specific gravity of a soil is the ratio of unit weight of soil solids to that of water at a temperature of-
4°
27°
17°
36°
20262.
The approximate void ratio in sandy soils is-
0.2
0.8
0.6
1.2
20263.
The minimum size of grains of silts is about-
0.0002mm
0.02mm
0.002mm
0.2mm
20264.
The property of a soil which is of great importance in finding settlement of structures. is- [BREB-15]
permeability
shear strength
consolidation
compressibility
ব্যাখ্যা: ব্যাখ্যা: Consolidation is a natural process where soil below the building and other structure compacted by the transferred load to the soil through the provided foundation system.
20265.
The unit weight of a soil at zero air voids depends upon-
unit weight of water
water content
specific gravity
all of these
20266.
Which of the following is practically impermeable? [BREB-15]
Gravel
Sand mixture
Coarse sand
Clay
20267.
কোন ধরনের Soil-এর Angle of internal friction সবচেয়ে বেশি হবে? [MOCA-19]
Angular grained loose sand
Angular grained dense sand
Clay
Round grained dense sand
ব্যাখ্যা: ব্যাখ্যা: যে Soil-এর Angle of internal friction বেশি, সে Soil-এর Shear stress বেশি।
20268.
The unit weight of soil mass is expressed in-
kg/m²
N/m²
kg/m³
kN/m³
20269.
The maximum size of grains of silts is about-
0.06mm
0.5mm
0.2mm
1mm
20270.
Residual soils are-
sands
silts
clays
all of these
20271.
The bearing capacity of soil can be improved by-[BREB-15]
increasing the depth of footing
draining the sub-soil water
ramming the granular material like crushed stone in the soil
all of the above
ব্যাখ্যা: ব্যাখ্যা: The following techniques can be used for improving bearing capacity of soil as per the site condition.
(1) Increasing depth of foundation
(i) Draining the soil
(iii) Compacting the soil
(iv) Confining the soil
(v) Replacing the poor soil
(vi) Using grouting material
(vii) Stabilizing the soil with chemicals.
20272.
Soils are derived from..............rocks.
igneous
metamorphic
sedimentary
any one of these
20273.
When water content in a soil is reduced beyond the shrinkage limit, the soil will be in a- [BREB-15]
solid state
semi-solid state
liquid state
plastic state
20274.
The density of soil mass is expressed in-
kg/m²
N/m²
kg/m³
N/m³
20275.
The soil transported by wind is called-
aeolian soil
alluvial soil
marine soil
lacustrine soil
20276.
The ratio of the volume of air voids to the volume of voids, is called-
void ratio
air content
degree of saturation
porosity
20277.
The soil transportated by running water is called-
aeolian soil
alluvial soil
marine soil
lacustrine soil
20278.
The ratio of the unit weight of soil solids to that of water is called-
void ratio
porosity
specific gravity
degree of saturation
20279.
Chemical weathering of soil is caused due to-
oxidation
hydration
carbonation & leaching
all of these
20280.
Which of the following soil is transported by wind?
Talus
Drift
Loess
all of these