MCQ
25761. Chemical weathering of soil is caused due to-
oxidation
hydration
carbonation & leaching
all of these
25762. Residual soils are-
sands
silts
clays
all of these
25763. The unit weight of a completely saturated soil (γ_sat) is given by-
((G+e)γ_ω)/(1+e)
((1+e)γ_ω)/(G+e)
((G-1)γ_ω)/(1+e)
((1-e)γ_ω)/(G+e)
25764. The minimum size of grains of silts is about-
0.0002mm
0.02mm
0.002mm
0.2mm
25765. A soil having uniformity coefficient more than 10, is called-
uniform soil
poor soil
well graded soil
coarse soil
25766. The ratio of the volume of air voids to the volume of voids, is called-
void ratio
air content
degree of saturation
porosity
25767. The smallest sieve size according to Indian standards is-
0.0045mm
0.045mm
0.45mm
0.154mm
25768. The unit weight of a soil at zero air voids depends upon-
unit weight of water
water content
specific gravity
all of these
25769. The relation between dry unit weight (γ_d), S.G. (G), void ratio (e) or porosity N is-
γ_d=(Gγ_ω)/(1+e)
γ_d=(Gγ_ω)/(1-e)
γ_d=Gγ_ω (1-n)
γ_d=Gγ_ω (1+n)
25770. The specific gravity of soil solids is determined by-
pycnometer method
hydrometer analysis
sieve analysis
all of these
25771. Sieving is not practicable for grainc sizes smaller than about-
0.075mm
0.095mm
0.15mm
0.2mm
25772. Which of the following soil is transported by wind?
Talus
Drift
Loess
all of these
25773. The maximum size of grains of silts is about-
0.06mm
0.5mm
0.2mm
1mm
25774. The approximate void ratio in sandy soils is-
0.2
0.8
0.6
1.2
25775. A soil having particles of nearly the same size is known as-
uniform soil
poor soil
well graded soil
coarse soil
25776. 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°
25777. The standard temperature at which the hydrometer is calibrated is-
10°C
15°C
20°C
27°C
25778. The density of soil mass is expressed in-
kg/m²
N/m²
kg/m³
N/m³
25779. Soils are derived from..............rocks.
igneous
metamorphic
sedimentary
any one of these
25780. The ratio of the unit weight of soil solids to that of water is called-
void ratio
porosity
specific gravity
degree of saturation