1. Chemical weathering of soil is caused due to ?

oxidation

hydration

carbonation and leaching

all of these

Answer: all of these

Explanation:


2. The maximum water content of a saturated soil at which a reduction in its moisture does not cause a decrease in volume of the soil, is called ?

liquid limit

plastic limit

elastic limit

shrinkage limit

Answer: shrinkage limit

Explanation:


3. The ratio of settlement at any time (t) to the final settlement is known as ?

compression index

coefficient of consolidation

degree of consolidation

none of these

Answer: degree of consolidation

Explanation:


4. Soils are derived from ?

igneous rocks

sedimentary rocks

metamorphic rocks

any one of these

Answer: any one of these

Explanation:


5. The degree of saturation for the moist soil is about ?

0%

1 to 25%

25 to 50%

50 to 75%

Answer: 50 to 75%

Explanation:


6. Which of the following is highly permeable ?

Gravel

Sand mixture

Coarse sand

Clay

Answer: Gravel

Explanation:


7. The contact pressure of flexible footing on non-cohesive soils is ?

more in the centre than at the edges

less in the centre than at the edges

uniform throughout

none of these

Answer: more in the centre than at the edges

Explanation:


8. The quantity of seepage of water in a soil medium is ?

directly proportional to the head of water at upstream

inversely proportional to the head of water at upstream

directly proportional to the coefficient of permeability

inversely proportional to the coefficient of permeability

Answer: directly proportional to the coefficient of permeability

Explanation:


9. A soil having uniformity co-efficient more than 10, is called ?

uniform soil

poor soil

well graded soil

coarse soil

Answer: well graded soil

Explanation:


10. The rate of expulsion of pore fluid is directly dependent on the ............. ?

shear strength

void ratio

permeability

none

Answer: permeability

Explanation: