Polly po-cket
1. Click here for New Test of Agronomy 2. Click here for New Test of Plant Breeding & Genetics 3. Click here for New Test of Ag Economics 4. Click here for New Test of Agril Entomology 5. Click here for New Test of Agril Extension 6. Click here for New Test of Horticulture 7. Click here for New Test of Plant Pathology 8. Click here for New Test of Soil Science

Soil Science-6

Q.1
Which element is most important for flocculation of soil

Na
K
Ca


Q.2
pH and pOH are?_________.
positively related
negatively related
no relationship


Q.3
Optimum pH for the growth and yield of rice is?
7.0-8.0
3.0-5.0
4.0-6.0


Q.4
Actinomycetes prefer________.
neutral condition
acidic condition
slightly alkaline condition


Q.5
Availability of boron and molybdenum is greatest under the pH?
7.0-7.5
6.5-7.5
above 7.5


Q.6
Among the following elements which is dominating element in earth crust?
Lithophile
Chalcophile
siderophile

Q.7
Which rocks are known as stratified rocks?

Igneous
sedimentary
metamorphic


Q.8
Slate is formed due to the metamorphism of__________.
sandstone
shale
limestone


Q.9
Specific gravity of heavy minerals is__________.
<2.85
>2.9
<6


Q.10
Among the following which rocks dominated in earth crust (upto 5 km depth)?
Igneous
sedimentary
metamorphic


Q.11
Potential acidity is also known as?
active acidity
exchange acidity
reserve acidity


Q.12
Dominant cations responsible for soil acidity are______.
H
Al
Both


Q.13
Which is preferring pH for azatobactor?
acidic
alkali
neutral


Q.14
The relationship between base saturation and pH is_______.
positive
negative
Isomorphic


Q.15
Soil salinity is mainly due to__________.
Cl
SO4
Both


Q.16
Which element is most important for deflocculation of soil?
Na
K
Ca


Q.17
Which soil type is more badly affected by excessive soluble salts concentration?
sandy
loam
clay


Q.18
Under acidic soils akiochi disease in rice developed due to the toxicity of_________.
S
Al
H2S


Q.19
Neutralizing value of calcite is?
179
86
100


Q.20
Availability of Zn and Fe is greatest under the pH?
7.0-7.5
6.5-7.5
< 5.5


Q.21
The pH ranges for most mineral soils_________.
6.0 to 7.0
5.5 to 8.5
3.5 to 10.5


Q.22
Availability of phosphorus is highest when the reaction is between__________.
5.5 to 7.5
6.0 to 8.0
6.5 to 7.5


Q.23
H2PO4- ions and HPO4-2 ion are in equilibrium condition in soil at PH________.
7.52
6.50
7.22


Q.24
Most suitable method for management of acid sulphate soil is_________.
Scrapping
Flooding
addition of Gypsum


Q.25
The process of break-down of H- Clay under alkaline condition is known as________.
Solodization
Solonization
Salinization

Number of score out of 25 = Score in percentage =


Click Here For Answers
Next Quiz

QuiZ:  1  2  3  4  5  6

Note: Having difficulties in attempting quiz or any misleading answer? please email us or comment below with indicating Test name, Thank You.  Good Luck


Subscribe for new Tests notifications
YOUR EMAIL *
form to email

Join Us


   
Home  About Us  Disclaimer  Email Us