Geotechnical Engineering

Pipette Method

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The volume (or) capacity of boiling tube taken in pipette method is about __________
750 ml
1000 ml
500 ml
800 ml
Explanation:
The boiling tube of 500 ml capacity is used in pipette analysis apparatus.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is not a disadvantage, in using the pipette method for sedimentation analysis?
The apparatus is very simple
Requires very accurate weight
It requires more time
The method of process is simple
Explanation:
In pipette method, the method of process is simple.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
The dispersing agents in soil particle, may act as __________
Cementing agent
Separating agent
Soluble agent
Deflocculating agent
Explanation:
The dispersing agents that are mixed with soil particle act as a cementing soluble to withhold the particles present.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following are used as a standard sedimentation method in a laboratory?
Sedimentation analysis method
Hydrometer method
Pipette method
Sand replacement method
Explanation:
Pipette method is used as a standard sedimentation method than hydrometer in a laboratory.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
In the pipette method of sedimentation analysis, the soil is treated with __________ to remove organic matter in it.
Hydrochloric acid
Sodium oxalate
Hydrogen peroxide
Sodium silicate
Explanation:
The soil is treated with hydrogen peroxide to remove organic matter.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
In pipette analysis apparatus, the water outlet is present at __________
Top
Bottom
Middle
Slightly above bottom
Explanation:
The water outlet is present in the middle of the pipette analysis apparatus.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following, cannot be used as a dispersing agent?
Sodium oxalate
Sodium polyphosphate
Sodium silicate
Sodium oxide
Explanation:
Sodium oxide cannot be used as a dispersing agent in preparing soil suspension.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
The recommended time interval for the drainage in pipette analysis is __________
1/2,1,2,4,8,15, and 30 min
2,4,6,12,20 and 30 min
1,8,16,24 min
24,30,34,40,46 min
Explanation:
The time interval for drainage of water in pipette analysis is ½, 1,2,4,8, 15 and 30 min.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
The dispersing agent which are added to soil in the pipette method may also be referred to as __________
Deflocculating agent
Calgon
Mechanical agent
None of the mentioned
Explanation:
To have a proper dispersion of the soil, Deflocculating agent is used as a dispersing agent.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
The process of removal of organic matter and calcium compounds in the dispersion method is __________
Pretreatment
Sedimentation
Evaporation
None of the mentioned
Explanation:
Pretreatment is the process of removal of organic matter and calcium compounds in the dispersion method.