Match List-I (Soil description) with List-ll (Coefficient of permeability, mm/s) and select the correct answer using the codes given below the lists:
B. Clay silt admixtures
D. Homogeneous clays
Permeability of Gravel (>1) > Sand (10-2 – 10-4) > Silt (10-4 – 10-6 ) > Clay (< 10-6)
Match List-I with List-ll and select the correct answer using the codes given below the lists:
A. Loess 1. Deposited from suspension in running water
B. Peat 2. Deposits of marine origin
C. Alluvial soil 3. Deposits by wind
D. Marl 4. Organic soil
Loess- Deposits by wind
Peat- Organic Soil
Alluvial Soil- Deposits from suspension in running water
Marl- Deposits of marine origin
Which of the following type of soil is transported by gravitational forces?
Soil carried and deposited by river water are alluvial soils. Deposits made in lakes are lacustrine deposits. Wind transported soil are aeolian deposits. Drift is a general term used for the deposits made by glaciers. Deposits directly made by melting of glaciers are called till. Talus are colluvial soil deposited by gravity.
According to IS classification, the range of silt size particles is:
List-I (Type of soil) with List-ll (Feature) and select the correct answer using the codes given below the lists:
A. Lacustrine 1. Transported by wind
B. Alluvial 2. Transported by running water
C. Aeolian 3. Deposited at the bottom of lakes.
D. Marine 4. Deposited in seawater
Lacustrine-Deposited at the bottom of lakes
Alluvial -Transported by running water
Aeolian -Transported by wind
Marine -Deposited in sea water
Match List-I (Range of particle size) with List-II (Type of soil) and select the correct answer using the codes given below the lists:
According to IS grain-size classification
The correct increasing order of the surface area of the given soils is
Finer the particle more the surface area.
Silt: 0.002 mm to 0.075 mm
Sand: 0.075 mm to 4.75 mm
Colloids have size less than clay particles.
Consider the following statements in the context of aeolian soils:
1. The soil has low density and low compressibility.
2. The soil is deposited by wind.
3. The soil has large permeability.
Which of these statements are correct?
Aeolian soil is a soil which is transported by wind and is mostly sand, thus, has high permeability.
The collapsible soil is associated with
Collapsible soil is mainly a clayey silt also known as loess.
Bentonite is a material obtained due to the weathering of
Bentonite is decomposed volcanic ash containing high percentage of clay mineral-montmorillonite.