Coal : Coal is a mineral of dark brown or black colour formed from the remains of plants buried in the earth's crust millions years ago. It is very pure form of carbon. It mainly consists of carbon, hydrogen and oxygen. The coal deposits are spread over in the state of Jharkhand, Madhya Pardesh and West Bengal.
Destructive distillation of coal: The process of heating coal in the absence of air is called the destructive distillation of coal. Coal contains a number of elements such as carbon, hydrogen, oxygen, nitrogen and sulphur. When coal is heated in the absence of air, a number of products are obtained. Peat has least carbon content and Anthracite has most carbon content.
The main products obtained by the destructive distillation of coal are as follows:
Coke: It is a hard, solid residue left behind destructive distillation of coal. It is pure form of carbon and used in steel manufacture, in power generations. Coal fields found near Bokaro and Jharia in Jharkhand.
Coal tar: Thick, black, opaque liquid obtained as by product of the process of destructive distillation of coal. manufacturing coke. Used in antidandruff shampoos, ointments, soaps, perfumes, and making naphthalene balls.
Coal gas: Gaseous fuel obtained as a by product of the process of manufacture coke. It is mainly composed of methane. Coal gas, gaseous mixture - mainly hydrogen, methane, and carbon monoxide - formed by the destructive distillation of coal and used as a fuel.
.Ammonical Liquor : The ammonia produced as a result of destructive distillation of coal is absorbed in water. The aqueous solution of ammonia, i.e. ammonium hydroxide solution is called ammonical liquor. It is used in the preparation of fertilizers such as ammonium sulphate and ammonium superphosphate.
Uses :
Petroleum : Petroleum is a naturally occuring oil that consists of hydrocarbons with some other elements, such as sulphur, oxygen and nitrogen. It is also called as rock oil.
Refining of petroleum : Petroleum is mixture of several hydrocarbons. It also contains water, salt and rocky materials. It cannot be used as crude.The process of seperating different components of petroleum is called refining of petroleum. This is done by the process of fractional distillation. The components obtained after fractional distillation are asphalt, lubricating oil, paraffin wax, fuel oil, diesel, kerosene, petrol and petroleum gas.
Pollution by Coal & Petroleum: When coal and petroleum are burnt, the products like carbon dioxide, water, oxides of nitrogen and oxides of sulphur are released into air. When combustion takes place in insufficient air (oxygen), carbon monoxide is formed instead of carbon dioxide. The oxides of sulphur, nitrogen and carbon monoxide are poisonous at high concentrations among these products - Carbon dioxide is a greenhouse gas. The increase in amount of carbon dioxide in the atmosphere will lead to intense global warming. Thus, we need to use these resources judiciously.
Conservation of Coat and Petroleum: General practices to reduce the consumption of coal petroleum are as follows: • Switch off the lights, fans, television and electrical appliances when not needed. • Use energy efficient appliances to save electricity. • Use stairs to climb at least up to three floors a building. • Public transport system needs to be improved, so that people can use them instead of using their personal vehicles. • On cold days, an extra sweater can be used instead of heating device like heater or sigri.
Identify the petroleum product which is a mixture of nearly 200 substances? | |||
Right Option : B | |||
View Explanation |
The origin of petroleum is indicated by the fact that | |||
Right Option : B | |||
View Explanation |
A type of coal which has lowest percentage of carbon is _________________ | |||
Right Option : A | |||
View Explanation |
Usually 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...
Abhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
In 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...
Abhyas 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.
It 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
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.
My 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.
One 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.
I 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
Abhyas 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...
My 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.
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas 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.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Third 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 ...
Abhyas 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...
When 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.
My 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
Being 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.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.