Coal
Coal
Coal is an non - metallic organic mineral. It is an important source of power and energy. Coal is divided into four classes based on the amount of carbon, humidity, volatile matter and ash -
Types of Coal in India
(i) Anthracite Coal - This category of coal has up to 92 percent carbon content. It is the best type i.e. black, shiny and very tough. It has very little moisture. This category of coal is available in Jammu - Kashmir. It is most commonly used as a fuel. This coal is the best.
(ii) Bituminous Coal - The amount of carbon in this category of coal is 40 to 80 percent. Its color is black or dark brown and is soft. It contains some amount of moisture. Its reserves are in the states of Jharkhand, Odisha, West Bengal, Telangana, Chhattisgarh and Madhya Pradesh. This is second class coal.
(iii) Lignite Coal - The amount of carbon in this category of coal varies from 40 to 55 percent. Its color is dark brown and soft. It contains more moisture It is used to make artificial petrol and thermal energy. This coal is an important raw material for chemical industries. Coal of this category is found in Palana in Bikaner district of Rajasthan, Neyveli in Tamil Nadu, Lakhimpur in Assam and Tertiary rocks of Karewa region of Kashmir. This is inferior type of coal.
Students / Parents Reviews [10]
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.
Shivam Rana
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 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.
Om Umang
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
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
10thOne 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
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
8thMy 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
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
10thAbout 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.
