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Microbiology of Soils

Microbiology of Soils
Denitrification may be distinguished as

dissimilative
blue baby syndrome
assimilative
both (a) and (b)

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Microbiology of Soils
Bacteria, as a group, are responsible for

nitrogen oxidation
sulfur oxidation
all of these
nitrogen fixation

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Microbiology of Soils
Which of the following statement is not true about composition of biogas?

It also contains with traces of O2 and Cl2
It is composed almost exclusively of methane and carbon dioxide
Both (a) and (b)
It also contains with traces of H2S, N2, H2and CO

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Microbiology of Soils
The nitrogenase consists of

dinitrogenase reductase
none of these
both (a) and (b)
dinitrogenase

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Microbiology of Soils
Most soil protozoa are flagellates or amoebas, having their dominant mode of nitrogen as

ingestion of mold
ingestion of fungi
all of these
ingestion of bacteria

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Microbiology of Soils
The groups of bacteria which have the ability to fix nitrogen from air to soil are

symbiotic
nonsymbiotic
none of these
both (a) and (b)

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