1. Porosity is defined as

- Ratio of volume of void to the total volume
- Ratio of volume of void to the volume of solids
- Ratio of volume of air to the volume of solids
- Ratio of volume of water to the volume of solids

2. A soil sample has a shrinkage limit of 10% and specific gravity of soil solids as 2.7. The porosity of the soil at shrinkage limit is

- 21.20%
- 27.00%
- 73.00%
- 78.80%

3. A soil sample has a porosity of 37.5%. The void ratio of the sample is

- 0.7
- 0.6
- 0.5
- 0.4

4. The ratio of the volume of voids to the total volume of soil mass is called

- water content ratio
- porosity
- void ratio
- degree of saturation

5. For a soil sample the void ratio of 0.6, its porosity is

- 33.3%
- 37.5%
- 41.2%
- 44.4%

6. If Porosity is “n’ and Void ratio is ‘e’, then the relation between the two is

- n = e/(1 – e)
- e = n/(1 – n)
- (1+n)/n = e – 1
- 1 – e = n

7. If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and void ratio respectively are

- 0.0 and 1.0
- 1.0 and 0.0
- 1.0 and 0.5
- 0.5 and 1.0

8. The ratio of volume of voids to the total volume of a given solid mass is called

- Porosity
- Void ratio
- Degree of saturation
- Mass density

9. A soil sample has void ratio of 0.5 and its porosity will be close to

- 66%
- 50%
- 33%
- 100%

10. The porosity of a soil n is

- e/1 + e
- e/1 – e
- e + 1/e
- e- 1/e

where e = void ratio

11. A lab technician estimated the voids ratio of a soil as 3. What will be the porosity of this soil?

- 1.00
- 1.25
- 0.33
- 0.75

12. The porosity of a soil sample having its void ratio equal to unity would be

- 33.33%
- 50.00%
- 66.66%
- 75.00%

13. The porosity of soil sample is 20%, the void ratio is

- 0.20
- 0.80
- 1.00
- 0.25

14. If the porosity of a soil sample is 40%, its void ratio is

- 2/3
- 1
- 1/3
- 1/2

15. If the porosity of a soil sample is 40%, void ratio for this sample would be

- 0.70
- 0.50
- 0.60
- None of the above