1. The maximum size of grains of silts is about ?

0.06 mm

0.2 mm

0.5mm

1 mm

Answer: 0.06 mm

Explanation:


2. The water content in a soil at which just shear strength develops is called ?

liquid limit

shrinkage limit

elastic limit

plastic limit

Answer: liquid limit

Explanation:


3. Which of the following is practically impermeable ?

Sand mixture

Gravel

Coarse sand

Clay

Answer: Clay

Explanation:


4. The density of sand at which there is no change in volume under the influence of shearing strain produced due to shear stress, is called ?

relative density

apparent density

critical density

any of these

Answer: critical density

Explanation:


5. By an agriculturist, soil is defined as ?

the loose mantle at the surface of the earth which favours the growth of plant

a natural aggregate of mineral grains, loose or moderately cohesive, inorganic or organic in nature

a disintegrated rock

none of the above

Answer: the loose mantle at the surface of the earth which favours the growth of plant

Explanation:


6. The angle of internal friction of round-grained dense sand is about ?

5° to 25°

25? to 30?

30° to 35?

32? to 37?

Answer: 32? to 37?

Explanation:


7. Black cotton soil ?

is inorganic in nature

contains large percentage of clay mineral

exhibits high compressibility

all of these

Answer: all of these

Explanation:


8. A sample of soil has liquid limit 45 %, plastic limit 25 %, shrinkage limit 17 % and natural moisture content 30%. The consistency index of the soil is ?

15/20

13/20

8/20

5/20

Answer: 15/20

Explanation:


9. The specific gravity of sandy soils is ?

1.2

1.8

2.2

2.7

Answer: 2.7

Explanation:


10. Stoke's law is applicable to particles upto ............. effective diameter ?

0.0002 mm

0.002 mm

0.02 mm

0.2 mm

Answer: 0.0002 mm

Explanation: