Q. No.Decomposition of organic nitrogen of dead plants and animals into ammonia is called
(1) Nitrogen Fixation
(2) Ammonification
(3) Nitrification
(4) Denitrification
(1) Nitrogen Fixation
(2) Ammonification
(3) Nitrification
(4) Denitrification
Which of the type of fixation leads to fixation of atmospheric nitrogen to ammonia?
(1) Biological nitrogen fixation
(2) Industrial nitrogen fixation
(3) Electrical nitrogen fixation
(4) Both A and B
Ammonia is first oxidized to nitrite by the bacteria except
(1) Nitrosomonas
(2) Nitrococcus
(3) Nitrobacter
(4) All of these
Nitrite is oxidized to Nitrate by the bacterium
(1) Nitrococcus
(2) Nitrosomonas
(3) Nitrobacter
(4) Thiobacillus
The nitrifying bacteria are
(1) Photoautotroph
(2) Chemoautotroph
(3) Nitrotroph
(4) Organotroph
Denitrification is
(1) Reduction of nitrate to nitrite
(2) Reduction of nitrate to nitrogen
(3) Reduction of nitrous to nitrite
(4) Reduction of nitrogen to ammonia
Denitrification is carried by
(1) Pesudomonas
(2) Thiobacillus
(3) Nitrobacter
(4) Both A and B
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