Geotechnical Engineering

Solid Particles in Soil

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The crystalline minerals whose surface activity is such that, they develop cohesion and plasticity are called __________
Non-clay minerals
Clay minerals
Bulky particles
Primary minerals
Explanation:
As the surface activity of clay minerals is high they develop a property of cohesion and plasticity.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following clay minerals are considered as colloidal?
Kaolinite
Dichite
Attapulgite
All of the mentioned
Explanation:
As entire clay particle has a greater dimension than 1μ, all of the clay minerals are considered as colloidal.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Chemically, the clay minerals are silicates of ____________
Aluminum
Iron
Magnesium
All of the mentioned
Explanation:
Since minerals contain alkaline and/or alkaline earth as essential component they contain alkaline mineral such as aluminium, iron, magnesium.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
The behavior of bulky particles in coarse grained soil is governed by ___________
Gravitational force and Mass energy
Colloidal force
All of the mentioned
None of the mentioned
Explanation:
The bulky particle does not possess the property of plasticity and cohesion.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
The fine-grained soil are composed of __________
Crystalline minerals and Amorphous materials
Primary minerals
All of the mentioned
None of the mentioned
Explanation:
Many investigations by Girm (1959) show that the fine-grained soil is composed predominantly of crystalline minerals and amorphous materials.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
A montmorillonite platelet has a specific surface/volume equal to ____________
120/μ
100/ μ
500/ μ
1000/ μ
Explanation:
Since the platelet of montmorillionite has a volume, 5 times greater than equivolume cube (200/ μ) its volume will be equal to 1000/ μ.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
The particle of coarse-grained are composed of ___________
Primary minerals
Non-clay minerals
Clay minerals
Crystalline minerals
Explanation:
Coarse-grained particle is usually made of primary minerals.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
Clay is essentially made of extremely __________
Large particles
Small particles
Intermediate particles
None of the mentioned
Explanation:
Clay is generally made of small particles of either a book of sheets like units (or) bundle of tubes or fibers.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Clay minerals are classified in to ____________
3
4
7
6
Explanation:
Kaolinite, montmorillonite, illite, playgorskite are the types of clay minerals.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Clay particles behave like ___________
Colloids
Amorphous solids
Crystalline particles
Non-colloids
Explanation:
Clay minerals have high surface like colloids and are controlled by surface energy, they behave like colloids.