Geotechnical Engineering

Interparticle Force in a Soil Mass

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The cationic linkage is similar to the intersheet bonds of ____________
Kaolinite
Illite
Dichite
Montmorillonite
Explanation:
The cationic linkage is similar to the intersheet bonds of illite since particle can be linked together through water-cation-water mechanism.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
There is no strong repulsive force between soil particles because ____________
Mobile cation will move along the surface
Cation will move opposite to each other
Cations replace each other
None of the mentioned
Explanation:
The mobile cations will move along the particle surface of positions which is balanced by particle charge there. Therefore repulsive force does not exist.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The repulsive force in soil particle is due to ____________
Particles are attracted to each other
Particles are similarly charged
Particles are oppositely charged
None of the mentioned
Explanation:
Since the particles are similarly charged (negative) they repel each other causing repulsive force.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following, is considered to be a universal attractive force?
Gravitational force
Dipole-cationic linkage
Ionic bond
Vander Waal’s London force
Explanation:
Since the vanderwaal’s London force effective in many soils, where other is not it is considered as a universal attractive force.
Question 5
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Pass Ratio : 100%
Which of the following type of attraction force act between two-particle carrying negative charges?
Vander Waal’s London force
Water-dipole linkage
Ionic bond
Cationic linkage
Explanation:
The cationic linkage act as bridge between two adjacent particle carrying negative charges.
Question 6
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The type of bond in kaolinite crystal is _____________
Cationic linkage bond
Hydrogen bond
Linkage bond
Ionic bond
Explanation:
The edges of two kaolinite crystal are joined by two cations. Hence cationic linkage bond exist in kaolinite crystal.
Question 7
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The repulsive force between the soil colloids become effective when?
They approach other
They combine with each other
They are at a distance
They overlap
Explanation:
When two soil colloids approach each other close enough, the double layer tend to overlap and interact.
Question 8
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Pass Ratio : 100%
The gravitational force between two soil particle is ____________
Proportional to charge
Proportional to area
Proportional to mass
Proportional to surface
Explanation:
When the mass of the particle increases, the gravitational force acting downward on the particle increases. Hence both mass and gravitational force are proportional to each other.
Question 9
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Between the soil particles, the cation charge may be entirely balanced by ____________
Particle repulsion
Negative charge
Cationic charge
Particle charge
Explanation:
The cation may be entirely balanced by particle charge so that there is no cation-cation repulsion.
Question 10
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Pass Ratio : 100%
There are _________ possible type of attractive forces.
4
5
6
2
Explanation:
There are 6 types of attractive forces.