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.Management Sciences
Category: Soil Science
Examples of micro biota are____________________?
0
A. Protozoa
B. Virus
C. Both a & b
D. None of the above
The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?
A. > 50 mg kg-1
B. > 10 mg-1
C. > 400 mg kg-1
D. None of these
Total salt affected soils of Pakistan are____________________?
A. 6.3 m ha
B. 5.0 m ha
C. 12.3 m ha
D. 10.5 m ha
While handing concentrated acids. bases or other hazardous chemicals use_________________?
A. Table
B. Fume hoods
C. Both a & b
D. None of the above
Material deposited by the wind is called____________________?
A. Regolith
B. Colluvial
C. Alluvium
D. Eolian
The lower limit of available water is called ____________________?
A. Field capacity
B. Wilting point
C. Available water
D. Hygroscopic water
An ion or molecule in the coordination sphere central ion is called__________________?
A. Complexion
B. Ligand
C. Chelate
D. Potential
Solution containing molecular weight of a substance in gram per liter of a solution is known as______________________?
A. Normal
B. Molal
C. Molar
D. None of the above
The exact chemical formula of DAP fertilizer is___________________?
A. (NH2) HPO4
B. NH4H2PO4
C. NH4H2PO4
D. Both a & c
Weathering of gabbros gives_____________________?
A. Sand and clay
B. Clay and iron oxide
C. Clay and Mg oxides
D. Sand and iron oxide
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