MCQ
181. 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)
182. Sieving is not practicable for grainc sizes smaller than about-
0.075mm
0.095mm
0.15mm
0.2mm
183. The smallest sieve size according to Indian standards is-
0.0045mm
0.045mm
0.45mm
0.154mm
184. The density of soil mass is expressed in-
kg/m²
N/m²
kg/m³
N/m³
185. 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°
186. A soil having particles of nearly the same size is known as-
uniform soil
poor soil
well graded soil
coarse soil
187. The specific gravity of soil solids is determined by-
pycnometer method
hydrometer analysis
sieve analysis
all of these
188. The approximate void ratio in sandy soils is-
0.2
0.8
0.6
1.2
189. The maximum size of grains of silts is about-
0.06mm
0.5mm
0.2mm
1mm
190. 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)
191. The unit weight of a soil at zero air voids depends upon-
unit weight of water
water content
specific gravity
all of these
192. The minimum size of grains of silts is about-
0.0002mm
0.02mm
0.002mm
0.2mm
193. A soil having uniformity coefficient more than 10, is called-
uniform soil
poor soil
well graded soil
coarse soil
194. The ratio of the unit weight of soil solids to that of water is called-
void ratio
porosity
specific gravity
degree of saturation
195. The unconfined compressive strength of a very soft clay is-
10 to 25kN/m²
150 to 400kN/m²
25 to 150kN/m²
above 400kN/m²
196. The standard temperature at which the hydrometer is calibrated is-
10°C
15°C
20°C
27°C
197. Residual soils are-
sands
silts
clays
all of these
198. Chemical weathering of soil is caused due to-
oxidation
hydration
carbonation & leaching
all of these
199. The unit weight of soil mass is expressed in-
kg/m²
N/m²
kg/m³
kN/m³
200. The ratio of the volume of air voids to the volume of voids, is called-
void ratio
air content
degree of saturation
porosity