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Microbiology of Soils

Microbiology of Soils
The energy value of biogas is typically

more than 5000 BTU/ft3
1,000 BTU/ft3
1500 BTU/ft3
400-700 BTU/ft3

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Microbiology of Soils
Which of the following is not the biofertilisers producing bacteria?

Anabaena
Clostridium
Nostoc
Both (a) and (b)

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Microbiology of Soils
Denitrification is carried out

predominantly by Pseudomonas spp
usually by facultative anaerobes
All of these
predominantly by Bacillus spp

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Microbiology of Soils
The crops which are involved in nitrogen fixation are

all of these
bean and lupine
alfalfa and clover
soybean

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Microbiology of Soils
Which of the following is capable of oxidizing sulfur to sulfates?

Thiobacillus thiooxidans
Rhodospirillum
Desulfotomaculum
Rhodomicrobium

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Microbiology of Soils
Which of the following fungi on infecting crop roots can improve their uptake of phosphorus and other nutrients?

VA Mycorrhiza
Candida torulopsis
Saccharomyces cerevisiae
Aspergillus niger

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