জিওটেকনিক্যাল ইঞ্জিনিয়ারিং MCQ
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201. Shrinkage index কী? [MOCA-19]
Liquid limit - Shrinkage limit
Liquid limit + Plastic limit
Plastic limit - Liquid limit
Shrinkage limit - Liquid limit
202. Which of the following have an influence on the value of permeability?
Grain size
Void ratio
Degree of saturation
all of these
203. When the consistency index is zero, then the soil is at its-
elastic limit
plastic limit
liquid limit
semi-solid state
204. The plastic limit exists in-
sandy soils
gravel soils
silty soils
clays
205. W ওজনের Soil sample-এর Moisture content = m, Proctor mould-এর Volume = V হলে Dry density কত হবে?[MOCA-19]
WV / m+1
V [m/(1 + m)]
W[ V(1 + m)]
V(1 + m) / W
206. The critical gradient of the seepage of water--- with the increase in S.G. of soil.
increases
decreases
same
infinity
207. The liquid limit minus plastic limit is termed as-
flow index
plasticity index
shrinkage index
liquidity index
208. 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
209. The unconfined compressive strength of a hard clay is-
10 to 25kN/m²
150 to 400kN/m²
25 to 150kN/m²
above 400kN/m²
210. The plasticity index is the ratio of liquidity index and flow index.
Right
Wrong
211. The critical gradient of the seepage of water in a soil medium is-
(1-G)/( 1+e)
(1+e)/(1-G)
(G-1)/( 1+e)
(1+e)/( G-1)
212. The liquid limit exists in-
sandy soils
gravel soils
silty soils
clays
213. Which of the following is highly permeable?
Gravel
Sand mixture
Coarse sand
Clay
214. The liquidity index (in percentage) is given by-
(ω_p-ω)*100/I_p
(ω_L-ω)*100/I_p
(ω_L-ω_p )*100/I_p
(ω-ω_p )*100/I_p
215. বিদ্যমান Over-burden pressure-এ মাটি যদি Fully consolidated না হয়, তখন তাকে কী বলে? [MOCA-19]
Pre-consolidated
Normally consolidated
Over consolidated
কোনোটিই নয়
216. A flow net is used to determine the-
seepage flow
seepage pressure
exit gradient
all of these
217. The sensitivity of a normal clay is about-
2 to 4
8 to 15
4 to 8
15 to 20
218. The coefficient of permeability of slit is---that of clay.
same as
less than
more than
none of these
219. 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)
220. The water content in a soil at which just shear strength develops is called-
liquid limit
elastic limit
plastic limit
shrinkage limit