[VSQ]SOIL SCIENCE, SET 9

SOIL SCIENCE

Q.1

Diameter of coarse sand particle is.

Ans. 

0.2-2 mm.

Q.2

Bulk density formula for soils is

Ans. 

B.D.=Weight of oven dry soil / Volume of soil (Solid+Pores).

Q.3

Diameter of fine sand particle is.

Ans. 

0.02–0.2 mm.

Q.4

Diameter of silt particle is.

Ans. 

0.02–0.002 mm.

Q.5

Dianmeter of clay particle is.

Ans. 

Less than 0.002 mm.

Q.6

Portion of capillary water lying between field capacity (1/3 atm) and wilting coefficient (15 atm) is known as.

Ans.

Available water.

Q.7

Water held up to the tension about 31 atm is known as.

Ans. 

Hygroscopic coefficient.

Q.8

Major source of Mn

Ans. 

Pirolusice.

Q.9

Kaolinite is a type of mineral.

Ans. 

1:1 type.

Q.10

Montmorillonite is a type of mineral.

Ans. 

2:1 type expanding type mineral.

 

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