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Soil Science-9

Q.1
The attraction of solid surface for water molecules is called as_________.

Adhesion
Cohesion
Flocculation
Plasticity


Q.2
The best agricultural soil structure is__________.
Crumb
Platy
Columnar
Bloky


Q.3
If igneous rock contains more than 65 per cent silica it is called as_________.
Acidic
Intermediate
Basic
Ultrabasic


Q.4
The soil having more than 30% organic matter is placed in_________.
Oxisols
Aridisols
Histosols
Alfisols


Q.5
The example of 2 : 2 type silicate clay mineral is________.
Chlorite
Kaolinite
Montmorillonite
Vermiculite


Q.6
The process of desilication is known as_______.
Laterization
Podzolization
Salinization
Humification

Q.7
The main centre of NBSS & LUP is located at_________.

Palanpur
Nagpur
Kanpur
Jodhpur


Q.8
The element N is not found in__________.
Atmosphere
Hydrosphere
Lithosphere
Planets


Q.9
The metamorphic rock formed due to action of high pressure is known as_________.
Dynamo metamorphic
Thermo metamorphic
Hydro metamorphic
None of these


Q.10
The progressive accumulation of Na+ ion on exchange complex is called as___________.
Salinization
Calcification
Alkalization
Gleization


Q.11
The soils formed in high rainfall area are___________.
Acidic
Basic
Alkaline
Saline


Q.12
Horizon B2 is also known as______________.
Illuvial horizon
Eluvial horizon
Solum
Transition horizon


Q.13
Hematite is converted to limonite by the process of___________.
Hydration
Hydrolysis
Oxidation
Carbonation


Q.14
Name of phosphorus supplying mineral is___________.
Quartz
Apatite
Feldspar
Calcite


Q.15
The horizon A + B are collectively called as __________.
Solum
Regolith
Organic
Illuvial


Q.16
The order of desert soil is___________.
Entisoils
Aridisols
Vertisols
Inceptisols


Q.17
The best agricultural texture is__________.
Loam
Sand
Silt
Clay


Q.18
The water retained by air dried soils is considered as________.
Gravitational
Hygroscopic
Capillary
Free


Q.19
Natural soil aggregates are known as_________.
Peds
Clods
Floccules
None of these


Q.20
Soil pH is a measure of____________.
Active acidity
Reserve acidity
Exchange acidity
None of these


Q.21
Infiltration rate is relatively higher in_________.
Sandy soil
Clay loam soil
Silty soil
Clayey soil


Q.22
Widely accepted fixed value of particle density is____________.
1.5 g/cc
2.65 g/cc
2.29 g/cc
1.65 g/cc


Q.23
Solution whose strength or concentration is accurately known is termed as___________.
Normal solution
Concentrate solution
Standard solution
solvent


Q.24
Study of origin, classification, morphology of soil is known as_____________.
Pedology
Edaphology
Soil physics
Physical chemistry


Q.25
Solution which contains one gram eq. wt. of substance dissolved in one lit. of solution is known as_____.
Molar solution
Normal solution
Molal solution
Standard solution

Number of score out of 25 = Score in percentage =


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