Nitrogen and Its Compounds
Nitrogen and Its Compounds
Nitrogen (N) And Its Compounds: Nitrogen is a chemical element (atomic number 7; atomic weight 14.0067). The electronic configuration is (2, 5). Nitrogen is a gas under normal conditions. Its molecular formula is Na. Molecular nitrogen is the principal constituent of the atmosphere (78% by volume of dry air) in which its concentration is a result of the balance between the fixation of atmospheric nitrogen by electrical (lightning), and chemical (industrial) action, and its liberation through the decomposition of organic materials by bacteria or combustion. In the combined state, nitrogen occurs in a variety of forms. It is a constituent of all proteins (both plant and animal) as well as of many other organic materials. Itschief mineral source is sodium nitrate.
Ammonia (): It is a colourless and alkaline gas. It is soluble in water and possesses a choking smell.
Commercially ammonia is manufactured by Haber's process.
The ease of liquefaction and heat absorption make ammonia an effective refrigerant. The largest use of ammonia is as a fertiliser. The ammonia provides nitrogen for the soil in a form in which it can be used by plants. Hydrazine, which is often prepared from ammonia, is used as jet and rocket fuel.
Nitric Acid (): It is used in the manufacture of explosives such as nitro-glycerine, guncotton, trinitrotoluene (T.N.T.) and picric acid. It is also used in medicines, celluloid, photographic film, dyes and rayon and nitrogenous fertilisers.
Nitrogen cycle is the collective term for the natural biological and chemical processes through which inorganic and organic nitrogen are inter-converted. In this cycle, nitrogen compounds pass continuously from the soil to living things and back again and, to a lesser extent, from each of these to the atmosphere and back. This process is crucial to the maintenance of life on this planet.
Atmospheric nitrogen cannot be used as such by plants or animals; it is used by plants in the form of compounds such as ammonia or nitrates. Most soils contain some amounts of nitrates in the form of ammonia compounds or in the form of decaying plant and animal matter (humus). Plants use these nitrates as food and convert them into amino acids and proteins. Proteins, in plants, either return to the soil when the plant dies or pass on to animals that consume the plant. The animals return the nitrogenous compounds to the soil through wastes or by decay on death.
Nitrogen does not only constantly circulate between the soil and living things, it also passes back and forth between each of these and the atmosphere.
The conversion of nitrogen from the atmosphere into a form available to plants and, hence to animals and humans is called nitrogen fixation.
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We started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
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Hridey Preet
9thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
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Manish Kumar
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Ayan Ghosh
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Sharandeep Singh
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Shivam Rana
7thThe experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
Aman Kumar Shrivastava
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
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Archit Segal
7thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
