Determination of Water Content

Q. A soil has dry unit weight of $15.5kN/m^2$, specific gravity of 2.65 and degree of saturation of 72%. Considering the unit weight of water as $10kN/m^3$ , the water content of the soil (in % round off to two decimal places) is

1. 19.26

Q. If a soil sample of weight 0.18 kg having a volume of ${10}^{-4}{m}^3$ and dry unit weight of $1600kg/m^3$ is mixed with 0.02kg of water then the water content in the sample will be

1. 30%
2. 25%
3. 20%
4. 15%

Q. The saturated and dry densities of a soil are respectively $2000kg/m^3$ and $1500kg/m^3$. The water content (in percentage) of the soil in the saturated state would be

1. 25
2. 33.33
3. 50
4. 66.66

Q. The specific gravity of a soil sample is 2.7 and its void ratio is 0.945. When it is fully saturated the moisture content of the soil will be

1. 25%
2. 30%
3. 35%
4. 40%

Q. A soil sample is having a specific gravity of 2.60 and a void ratio of 0.78. The water content in percentage required to fully saturate the soil at that void ratio would be

1. 10
2. 30
3. 50
4. 70

Q. The natural water content as a sample taken from soil deposit was found to be 15 %. It has been calculated that the maximum density of soil will be obtained when the water content reaches 21.5%. How much water must be added to each 500 kN as soil (in its natural state) in order to increase the water content to 21.5 %. Take G= 2.75.

1. 9.8 kN
2. 28.26 kN
3. 20.98 kN
4. 26.85 kN

Q. As a part of control check during construction of an earthen dam, a core of compacted soil was cut and measured its weight and volume as 1800 gm and 1000 cc respectively. Its water content was determined and found to be 10%. If the dam gets fully saturated due to shower of rains, the change in water content without change in volume is in %. (Assume G=2.65)

1. 13.4
2. 15.2
3. 19.8
4. 7.06