Soil Science

Soil Science
The most abundant metal in the earth’s crust and toxic to plants in low concentration is _______?
Fe
Al
Mo
All the above
Author: rikazzz Comment
Soil Science
Most widely spread mineral in the world is _______?
Salt
Kaolinite
Iron
None of these
Author: rikazzz Comment
Soil Science
Addition of sodium hexametaphosphate in soil for determination of soil texture causes _______?
Cementing of soil particles
Aggregation of soil particles
Dispersion of soil particles
All the above
Author: rikazzz Comment
Soil Science
A soil is categorized as saline when EC of saturation extract is _______?
More than 4dsm-1
0.4dsm-1
Less than 4dsm-1
4.0 dsm-1
Author: rikazzz Comment
Soil Science
Slipperiness is due to _______?
Wire bond
Vander walls forces
Covalent bond
None of these
Author: rikazzz Comment
Soil Science
Urea in manufactured form gases _______?
NH3 and CH4
NH48CO2
NH3
All the above
Author: rikazzz Comment
Soil Science
Color of fertile soil is _______?
Green
White
Brown
Black
Author: rikazzz Comment
Soil Science
The toxicity level of Zn (mg/kg) in plants suggested by some workers is _______?
More than 10 mg-1
More than 50 mg kg-1
More than 400 mg kg-1
None of these
Author: rikazzz Comment
Soil Science
The zorawar is brand name of _______?
DAP
TSP
MAP
None of these
Author: rikazzz Comment
Soil Science
Widely spread saprophytic fungi is _______?
Endospore
Ascomycetes
Basidiomycetes
None of these
Author: rikazzz Comment

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