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Soil Science-2

Q.1
Total porosity is more in__________.

Sandy soil
Loamy soil
Clayey soil


Q.2
The best agricultural soil structure is____________.
spheroidal
Platy
prism


Q.3
Chemically most active soil separate is__________.
sand
silt
clay


Q.4
The common clay mineral found in silt is_________.
montmorillonite
mica
quartz


Q.5
The lightness or darkness of soil colour is denoted by__________.
hue
value
chroma


Q.6
The most commonly used organic amendment is__________.
FYM
Gypsum
Lime

Q.7
The most commonly used inorganic amendment is_____________.

FYM
Gypsum
Urea


Q.8
The method used for determination of lime requirement of acidic soil is___________.
Olsen’s
Shoemaker
Schoonover


Q.9
When H+ ion concentration found in soil solution is called___________.
Active acidity
Reserved acidity
sodicity


Q.10
When H+ ion concentration is found on exchange complex soil is called___________.
Active acidity
Reserved acidity
sodicity


Q.11
Which is not a beneficial element for the plant?
Vanadium
Silicon
Zinc


Q.12
The element which is immobile in the plant system_______.
Boron
Potash
Nitrogen


Q.13
___________ is also known as saline-alkali soil.
White alkali
Black alkali
Usar


Q.14
Yellowing of older leaves occur due to deficiency of_______.
Nitrogen
Phosphorus
sulphur


Q.15
Essentiality criteria of nutrients are given by________>
Schoonover
Jackson
Arnon


Q.16
Total soluble salts of sodic soil is_________.
< 1%
>1%
<0.1%


Q.17
________ is used for reclamation of sodic soil.
Urea
Lime
Gypsum


Q.18
_________ is a component of cell wall.
Nitrogen
Silicon
Calcium


Q.19
Generally the physical condition of sodic soil is_________.
normal
deflocculated
flocculated


Q.20
The SAR level of sodic soil is more than_________.
10
13
05


Q.21
Generally the osmotic pressure of saline soil is__________.
Low
High
unaffected


Q.22
Availability of __________ increases in acidic soils.
Nitrogen
Manganese
Molybdenum


Q.23
Gypsum equivalent of sulphur is________________.
0.186
1.00
0.58


Q.24
Under heavy rainfall area _______ soil is found.
Black
Acidic
Saline


Q.25
Salt affected soils are mostly formed in _________ climate.
Arid & semi-arid
Humid
Tropical

Number of score out of 25 = Score in percentage =


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