The time for which water and ion remains in vicinity is called _____?
A. Primary hydration
B. ppm
C. Normality
D. Residence time
Common soils found in Pakistan are ________?
A. Arid soils
B. Inceptisols
C. Entisols
D. All the above
Examples of micro biota are _________?
A. Protozoa
B. Virus
C. Both a & b
D. None of the above
Which bacteria causes fermentation _______?
A. Azotobacter
B. Bacillus
C. Pseudomonas
D. Corey
Widely spread saprophytic fungi is _______?
A. Basidiomycetes
B. Ascomycetes
C. Endospore
D. None of the above
Which compound decay slowly ______?
A. Amino acid
B. Lignin
C. fats
D. Cellulose
Who gave the defination of humic acid ?
A. Gapon
B. Felbeek
C. Neir
D. Liekig
Extraction of humic substance can be done by _________?
A. NaOH
B. NH4Cl
C. NH4OH
D. None of the above
The complex fertilizer Nitrophos available in the market contains _______?
A. 25%N & 23% P2O3
B. 46%N & 23% P2O3
C. 23%N & 23% P2O3
D. None of the above
Radiation can be detected by the blankening of photographic film or by using ______?
A. Ratio autoanalyser
B. GM counter
C. Neutron probe
D. Dosimeter
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