Synthetic fibres and plastics questions

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August undefined, 2024

WebOct 31, 2024 · Mark ( ) the correct answer. Rayon is different from synthetic fibres because. (a) it has a silk-like appearance. (b) it is obtained from wood pulp. (c) its fibres can also be woven like those of natural fibres. Answer: (b) It is obtained from wood pulp. Question 3. Fill in the blanks with appropriate words. WebFeb 24, 2024 · 1. Substance used as synthetic wool (7) 2. A plastic used for making containers and carry bags (9) 3. Substance made up of large number of smaller molecules (7) 4. Another name for this compound is artificial silk (5) Down. 5. A type of fibre …

MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres …

WebSynthetic Fibres and Plastics Class 8th Synthetic Fibres and Plastics Science QuizThis video contains multiple choice questions (MCQs) on the chapter- Synthe... WebDec 2, 2024 · A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. dj-36008

What are Synthetic Fibers? - Definition, Types,

WebJun 9, 2024 · (a) Synthetic fibres are also called artificial or man-made fibres. (b) Synthetic fibres are synthesised from raw materials called petrochemicals. (c) Like synthetic fibres, plastic... WebQuestion 6. ‘Manufacturing synthetic fibres are actually helping conservation of forest’. Comment. Answer 6: Synthetic fibres are made from synthesised polymers of small molecules. The compounds used to make these fibres come from various raw materials … WebWrite a few characteristics of synthetic fibres. 4. What is 4R principle? 5. What are biodegradable and non-biodegradable materials? 6. What are the disadvantages of plastics? 7. Why is it convenient to store plastic containers than metals? dj-36020

NCERT Exemplar Class 8 Science Solutions Chapter 3 Synthetic Fibres …

What is the difference between synthetic fibre and plastic?

WebOct 4, 2024 · Synthetic Fibres and Plastics Class 8 Science NCERT Textbook Questions. Question 1. Explain why some fibres are called synthetic. Answer: Some fibres are called synthetic fibres because they are made by man using chemicals. Question 2. Mark ( ) the … WebMay 24, 2024 · (a) Synthetic fibres are also called artificial or man-made fibres. (b) Synthetic fibres are synthesised from raw materials called petrochemicals. (c) Like synthetic fibres, plastic is also a polymer. 4. Give examples which indicate that nylon fibres are very strong. Answer dj-4 47°Web6 rows · Answer: Synthetic fibres and plastics are made up of very large units called polymers, and ... dj-365

"WebThese solutions for Synthetic Fibres And Plastics are extremely popular among Class 8 students for Science Synthetic Fibres And Plastics Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Living Science 2024 2024 Book of Class 8 Science Chapter 3 are provided here for you for … " - Synthetic fibres and plastics questions

Synthetic fibres and plastics questions

NCERT Solutions for Class 8 Science Chapter 3 - Jagranjosh.com

WebFeb 24, 2024 · Here we have covered Important Questions on Synthetic Fibres and Plastics for Class 8 Science subject. Science Important Questions Class 8 are given below. Multiple Choice Questions Pick the synthetic fibre out of the following? (a) Cotton (b) Nylon (c) Jute (d) Wool Which of the following is a source of rayon? (a) Wool (b) PET (c) Wood pulp WebJun 15, 2024 · Question 2. Mark ( ) the correct answer: Rayon is different from synthetic fibers because: (i) It has a silk-like appearance. (ii) It is obtained from wood pulp. (iii) Its fibres can also be woven like those of natural fibres. Answer: (ii) It is obtained from wood pulp. Question 3.

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WebJan 22, 2024 · Question 12: “Even though plastics are very useful, they are not environment friendly.”Justify the statement. Answer: Since plastic takes several years to decompose, it is not environment friendly.It causes environmental pollution. Besides, the burning process in the synthetic material is quite slow and it does not get completely burnt easily. WebThese are called thermosetting plastics. a) Saucepan handles are made of thermosetting plastics because it resist fire and tolerate heat better than other plastics. Example of this kind of thermosetting is Melamine. b) Thermosetting plastics such as bakelite are poor conductor of heat and electricity.

WebMay 17, 2024 · Synthetic fibres are: (a) strong (b) durable (c) hining (d) all of these Answer Question 3. Which of the following is not thermoplastics: (a) acrylic (b) polyethylene (c) polystyrene (d) melamine Answer Question 4. Wire made from which fibre is strongest: … WebApr 13, 2024 · Synthetic Fibres & Plastics. Diksha Bhuwalka. 104. English. Science. Agricultural Practices. Diksha Bhuwalka. 178. English. ... Microorganisms & Synthetic Fibres - CBSE Class 8. Diksha Bhuwalka. Starts on 14th Apr. Hinglish. ... Call us and we will answer all your questions about learning on Unacademy. Call +91 8585858585 .

WebSynthetic fibres, like natural fibres, are difficult to colour. These fibres burn more rapidly than natural fibres. They are susceptible to heat damage and rapidly melt. Many animals die after consuming plastic materials. When plastic is burned, it emits harmful gases. Q7. … WebDetailed Solution for Test: Synthetic Fibres And Plastics (Easy) - Question 4 Biodegradable wastes are such waste materials that are and can be degraded by natural factors like microbes (e.g. bacteria, fungi, and a few more), abiotic elements like temperature, UV, oxygen, etc. Example: kitchen wastes and other natural wastes.. The cloth is a natural …

WebApr 5, 2024 · The synthetic fibers have plenty of important questions that deals with day to day life and are ...

WebNov 20, 2024 · It contains question answers of all exercise questions, extra questions of the unit Synthetic Fibres and Plastics in the class 8 NCERT Science book. Therefore you can download and use the NCERT Solutions for Class 8 Science to know all answers key, and learn more for your homework, exam preparation. dj-3500WebA. The process of making yarn from fibres is called spinning. B. In this process, fibres from a mass of cotton wool are drawn out and twisted. C. A simple device used for spinning is a hand spindle, also called takli. D. Another hand operated device used … dj-393dWebDownload a PDF of free latest Sample questions with solutions for Class 8, Science, CBSE- Synthetic Fibres and Plastics . All types of questions are solved for all topics. You can also get complete NCERT solutions and Sample papers. dj-40aWebStudy Synthetic Fibres and Plastics Class Fill in the Blanks questions prepared by experts at TopperLearning. Visit our website to stay up to date for your test on Synthetic Fibres and Plastics! ... You can move between questions and answer them in any order you like. Click on "End Test" when you are done. These tests are unlimited in nature ... dj-4 dj-5 違いWeb【Upgrade Extension】The extension is made from new synthetic fiber that is thickness and less tangling. And the upgraded wire is thicker and more elastic, not easy to break and not cause any pressure on the scalp. ... Most Concerned Questions How to Adjust the Size？ Adjust size by putting the plastic hook into 5 different notches on each ... dj-4WebMar 25, 2024 · 8th Class Physical Science 4th Lesson Synthetic Fibres and Plastics Textbook Questions and Answers Improve Your Learning Question 1. Explain why some fibres are called synthetic. Answer: Unlike natural fibres, synthetic fibres are made from petroleum based chemicals or petrochemicals. dj-44gWeb4. Give three advantages of polythene over natural materials. 5. Explain why plastic containers are favored for storing food? 6. Explain why Electric plugs/switches/plug boards are made of thermosetting plastics? 7. Give examples to show that plastics are noncorrosive in nature. 8. dj-4 54