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
8thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thThe 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 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 nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thAbhyas 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.
Barkha Arora
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Manish Kumar
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Cheshta
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Shivam Rana
7thUsually 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
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thI 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
10thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
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Hiya Gupta
8thAbhyas 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
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha 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
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
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
