Accurate determination of water content, is made by calcium carbide method sand

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Question
Accurate determination of water content, is made by
Options
A. calcium carbide method
B. sand bath method
C. alcohol method
D. oven-drying method.

Correct Answer

oven-drying method.

Soil Mechanics and Foundation Engineering problems

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1. A flow line makes angles ?₁ and ?₂ with the normal to the interface of the soils having permeabilities k₁, k₂ before and after deflection. According to the law of deflection of the flow lines at the interface of the dissimilar soils
Options
A.
B.
C.
D.

4. The ratio of the weight of given volume of soil solids to the weight of an equal volume of distilled water at the given temperature, is known
Options
A. porosity
B. specific gravity
C. void ratio
D. water content.

7. The liquidity index is defined as a ratio expressed as percentage of
Options
A. plastic limit minus the natural water content, to its plasticity index
B. natural water content minus its plastic limit to its plasticity index
C. natural water content plus its plastic limit to its plasticity index
D. liquid limit minus the natural water content to the plasticity index.

8. The active earth pressure of a soil is proportional to (where ? is the angle of friction of the soil)
Options
A. tan (45� - ?)
B. tan² (45� + ?/2)
C. tan² (45� - ?/2)
D. tan (45� + ?)

9. The weight of a pycnometer containing 400 g sand and water full to the top is 2150 g. The weight of pycnometer full of clean water is 1950 g. If specific gravity of the soil is 2.5, the water content is
Options
A. 5%
B. 10%
C. 15%
D. 20%

10. The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known
Options
A. liquid limit
B. plastic limit
C. shrinkage limit
D. permeability limit.

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