Soil Science

Soil Science
Organic P content in soil, by ignition method is estimated by igniting the soil at:
550ºC
1000ºC
250ºC
1250ºC
Author: rikazzz Comment
Soil Science
Secondary air pollution is:
CO3
HNO3
CO2
All the above
Author: rikazzz Comment
Soil Science
The exact formula for sodium hexametaphosphate is:
[(NaPO₂)₆]
[(NaPO₃)₆]
[(NaPO₆)₁₃]
None of these
Author: rikazzz Comment
Soil Science
The tree sends down roots from its branches to the soil is know as: _______?
Pine
Oak
Banyan
Palm
Author: rikazzz Comment
Soil Science
Percentage of N in Ammonium ritract fertilizer is _______?
23
21
33
39
Author: rikazzz Comment
Soil Science
How many different minerals deposits are found in Pakistan ?
30
60
100
None of these
Author: rikazzz Comment
Soil Science
Corrositivity of water is an indication of _______?
Property of polluted material
Salinity
Both A and B
None of these
Author: rikazzz Comment
Soil Science
Deficiency of B can be corrected through application of chemical fertilizer of _______?
Boric acid
Solubor
Borax
All the above
Author: rikazzz Comment
Soil Science
The safe limit of No2 in drinking water is _______?
10 mg L-1
20 mg L-1
15 mg L-1
None of these
Author: rikazzz Comment
Soil Science
Which mineral contain phosphorus _______?
Metamorphic
Igneous
Apatite
None of these
Author: rikazzz Comment

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