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]
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.
Prisha Gupta
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
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
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
7thWhen 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.
Sharandeep Singh
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 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
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
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 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
8thMy 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
7thAbhyas 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 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
10thAbhyas 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
10thA 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.
Archit Segal
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
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...
Aman Kumar Shrivastava
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
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 a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
