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प्रश्न
Very Short Answer Question:
What is denitrification?
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उत्तर
Denitrification is the process in which anaerobic bacteria convert soil nitrates back into nitrogen gas.
Denitrifying bacteria removes fixed nitrogen i.e. nitrates from the ecosystem and returns it to the atmosphere in an inert form.
Denitrifying bacteria include Bacillus spp., Paracoccus spp. and Pseudomonas denitrificans. They transform nitrates to nitrous and nitric oxides and ultimately to gaseous nitrogen.
2NO3 → 2NO2 → 2NO → N2
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संबंधित प्रश्न
Draw diagram of Nitrogen cycle.
Write a note on nitrogen fixation?
Explain the following cycle in your own words with a suitable diagram.
Nitrogen cycle.
Very Short Answer Question:
Name the bacteria responsible for conversion of nitrite to nitrate.
Long Answer Question:
Explain biological nitrogen fixation with example.
Nitrogen is a greenhouse gas.
Match Column - I with Column - II.
| Column - I | Column - II | ||
| (a) | Nitrococcus | (i) | Denitrification |
| (b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
| (c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
| (d) | Nitrobacter | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below.
Free-living soil bacteria such as Pseudomonas sp. are responsible for the ______ process in the nitrogen cycle.
Name the cell which is responsible for nitrogen fixation in cyanobacteria.
Which of the following statement is incorrect with regard to combustion?
