Natural And Synthetic Fibres
Natural And Synthetic Fibres
Natural And Synthetic Fibres:
Natural Fibres: Cotton, wool and silk are three important natural fibres, which are used in making fabrics. Cotton is a cellulose fibre, whereas wool and silk are protein fibres. Cellulose is a naturally occurring polymer found in the cell wall of the plants.
Synthetic Fibres (Man-Made Fibres): These are of two types:
(i) Those which are made from natural raw materials, e.g. rayon;
(ii) Those which are purely synthetic and do not require any natural raw materials, e.g. nylon and terylene.
Rayon: This is a man-made silk, which consists of purified cellulose in the form of long fibres. Rayon fibre is chemically identical to cotton but has a shine like silk and, hence, called artificial silk. Basically, derived from a renewable source, it is called a regenerated fibre. Rayon is used on a large scale in India for making textiles, tyre-cord, carpets and surgical dressing.
Nylon: Nylon was the first synthetic fibre made by man. Today it is used for a variety of purposes where high strength fibres are required, such as fishing nets, ropes, parachute fabrics and tyre-cord. It is also mixed with wool to make long lasting fabrics. Nylon is widely used as a plastic for making machine parts.
Polyester: Since this fibre contains many ester groups, it is called Polyester.
Polyester fibres, like nylon, absorb very little water, Clothes made of polyester, therefore, dry quickly. The fibre retains crease and lasts for a long time. Polyester fibres are widely used in the manufacture of textiles - sarees, dress materials and curtains. They are mixed with natural fibres for making blended textiles. Polyester is used for making sails for sail boats, and a variety of other materials such as water hoses, for fire fighting.
Carbon Fibres: Carbon fibres made of long chains of carbon atoms possess high strength and resistant to corrosion. They are made from regenerated or synthetic fibres by heating them in the absence of oxygen. Thereupon, the fibres decompose to produce carbon fibers. Carbon fibres are used in spacecraft and for making sports goods.
Students / Parents Reviews [20]
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.
Yogansh Nyasi
7thMy 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 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
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
8thAbhyas 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
10thI 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
10thWe 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 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
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
7thAbout 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
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
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
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 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
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
8thAbhyas 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
10thIt 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
8thBeing 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
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
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.
