MCQ
161. Clayey soil 4 pile driving করার ক্ষেত্রে কোন ধরণের hammr ব্যবহার করা উচিত?.
Drop hammer
Diesel hammer
Vibratory hammer
All of the mentioned
162. Which of the following is highly permeable?
Gravel
Sand mixture
Coarse sand
Clay
163. A flow net is used to determine the-
seepage flow
seepage pressure
exit gradient
all of these
164. The liquid limit exists in-
sandy soils
gravel soils
silty soils
clays
165. Cohesionless soil is-(সমন্বয়হীন মাটি হল)
sand
clay
Silt
clay and silt
166. When the consistency index is zero, then the soil is at its-
elastic limit
plastic limit
liquid limit
semi-solid state
167. 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)
168. A soil having particles of nearly the same size is known as (প্রায় সম অকৃতির কণা বিশিষ্ট মাটিকে বলে -
uniform soil
poor soil
well grade soil
coarse soil
169. Which of the following have an influence on the value of permeability?
Grain size
Void ratio
Degree of saturation
all of these
170. The water content in a soil at which just shear strength develops is called-
liquid limit
elastic limit
plastic limit
shrinkage limit
171. The critical gradient of the seepage of water--- with the increase in S.G. of soil.
increases
decreases
same
infinity
172. The unconfined compressive strength of a hard clay is-
10 to 25kN/m²
150 to 400kN/m²
25 to 150kN/m²
above 400kN/m²
173. The liquid limit minus plastic limit is termed as-
flow index
plasticity index
shrinkage index
liquidity index
174. The plasticity index is the ratio of liquidity index and flow index.
Right
Wrong
175. The plastic limit exists in-
sandy soils
gravel soils
silty soils
clays
176. An unsaturated soil sample weightis 45 kg and its dry weight is 40 kg so water content is (একটি অসম্পৃক্ত মাটির নমুনার ওজন ৪৫ কেজি এবং শুকনো ওজন ৪০ কেজি অতএব জলের পরিমাণ (water content) যাবে)
10.5%
12.5%
15%
5.5%
177. The sensitivity of a normal clay is about-
2 to 4
8 to 15
4 to 8
15 to 20
178. The critical gradient for all soils is normally-
0.5
1
1.5
2.5
179. The coefficient of permeability of slit is---that of clay.
same as
less than
more than
none of these
180. 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