(a) Acrylic                               (b) RayonÂ,           (c) Nylon                                 (d) Cotton, 03. It has capacity to bear weight and helps the mountaineers to climb. nylon is a high strength fiber so it does not break easily. Terylene is a type of popular polyester. (ii) A polymer that can be decomposed by microorganisms within a definite period of time, so that the polymer or its degraded product does not cause any harm to the environment, is called a bio-degradable polymer. Carbon dioxide fire extinguishers are designed for which types of fuels? It remains crisp and is easy to wash. Add weights one by one till it breaks. Plastics can be easily molded into any shape and sizes. Melamine is used for making floor tiles, kitchenware etc. This can sometimes mean a millimeter to people outside of the United States, so don’t get confused! Besides this an improper disposal of polythenes leads to following environmental problems:Â, 2. They are used for making toys, car grills etc. Plastic is also defined as a material that can be heated and molded in any shape after cooling. Answer: mountaineers use nylon ropes for climbing the mountains because nylon is a high strength fiber so it does not break easily. It is used for making bottles, utensils, films, wires and many other useful products. })(window, document); Your email address will not be published. Required fields are marked *, About | Privacy Policy | Disclaimer | Sitemap. 8. 10. Answer: Ester. Synthetic fibers are not good absorbers of _______ .Â, c. In______ weather clothes made of synthetic fiber stick to the body.Â, d. Synthetic fibers catch fire easily so they are _______ .Â, e. Clothes made of synthetic fibers should not be worn in ______, a. This PET is used in the manufacturing of pet bottles like cold drink, water bottles. True or false? Answer: Above articles are made up of bakelite (a thermosetting plastic) because they are– ((w.adpushup = w.adpushup || {}).control = (w.adpushup.control || [])).push(k);          (c) Cellulose                        (d) Polyester, 14. Plastics can be easily molded into any shape and sizes. 11. The lesson covers the complete, . Fabrics are sold by names like polycot, polywool, terrycot etc. (a) Assertion is true, Reason is true; Reason is a correct explanation for Assertion (b) Assertion is true, Reason is true; Reason is not a correct explanation for Assertion (c) Assertion is true, Reason is false (d) Assertion is false, Reason is true. 6. a. Plastic Bags For Brining. It is soft, smooth, cool, comfortable, and highly absorbent. Peels of vegetable and fruits, leftover food stuff etc. They consist of multiple units that join together to form big molecules called polymer. Polyester is manufactured from petroleum. Plastic, Its types and its advantages and disadvantages. ______ fibers are less expensive than natural fibers.  It is a category of polymer which contain an ester group in their main chain. Bakelite was durable and heat resistant and could be molded into almost any shape.           (c) Acrylic                               (d) Polyester, 02. It chokes drains and blocks the pores of soil, which hinders the absorption of water by soil. Thus, we can say that thermoplastics are poor conductors of electricity. Your No1 source for Latest Entrance Exams, Admission info, January 8, 2019 by SuccessCDs Team in CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers. We cover a range of industries and provide products such as clinical waste sacks, printed poly bags, plastic sheeting, EVA low melt polythene bags, tiger stripe sacks and much more. For example: Polythene. Which of the following is natural fibre obtained from plants? We should recover the substances that are useful for us. As we all know that there are different materials present in our surroundings and these materials are used for different purposes as per our need. A) true B) false 17. Answer: Three main advantages of using plastic containers for storing food are: Question: Explain why the following are made of thermosetting plastics.  What is the name of regenerated synthetic fiber? For example, LDPE is widely used in plastic packaging, such as for grocery bags or plastic wrap. c. ______ shrinks on burning producing black smoke.         (c) Rayon                            (d) Ketone. 11. It has capacity to bear weight and helps the mountaineers to climb. If in case you are unable to identify the fiber, you can take help of your parents in selecting these pieces. 2. Nylon is made from ____? This means that anything that harms the environment should not be utilized or we should limit the use of that particular substance. B. These are called thermosetting plastics. If the cloth catches fire it can be very disastrous. It is used for making commonly used polythene bags. ______ burns slowly with the smell of burning hair.  There are two types of fibers which can be carized on the basis of their origin and that are written as follows: Natural fibers are obtained from plant and animal sources. So, it is quite suitable for making dress material. d. ______ burns readily with the smell of burning paper.Â, e. ______ shrinks if burnt and forms a black bead a long with sooty flame.Â, c. Nylon is prepared from simple chemicals obtained from ______ .Â, d. Polyester is made from ______ products.Â, e. ______ is called a regenerated fiber.Â. Polythene definition is - polyethylene. Cold drink glass is also made up of plastic.          (a) Protein                           (b) Fructose Topics covered are Introduction to fibres, kinds of fibres. Answer: Summer season.         (a) Cotton                           (b) Wool,         (c) Rayon                            (d) Ketone. It is used for packaging many goods like container etc. This shows that synthetic fiber dry quickly as compare to natural fiber. Why polyester is quite suitable for making dress materials? The synthetic fibers can be woven into a fabric, just like natural fiber. Answer: Teflon is used in making non stick pans because oil and water does not stick on it. 10. PET is a very familiar form of polyester. It is highly resistant to insects, fungi, animals, chemicals, etc. The first fully synthetic fiber was _______? Causes of Plastic Pollution The reckless dumping of plastic waste is yet one of the environmental topics that has attracted the attention of many conservationists and nations. A false memory is a recollection that seems real in your mind but is fabricated in part or in whole. True b. 9. True 4. 43. Question: Fill in the blanks with appropriate words:Â. Fiber produced in factories is called ______ It is a man-made fibre made from wood pulp. Thermoplastics: These are plastics that easily get deformed on heating and can be bent easily. Recycle: We should recycle the substances. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. There are certain fibers which are obtained from plants and are known as vegetable fibers. It has ability to be lustrous, semi lustrous or non lustrous. These are synthetic fibers made from a polymer called polyacrylonitrile. It is very durable, resistant to chemicals. to highly specialized uses in aircrafts, ships, spacecrafts, health care, etc. Your email address will not be published. What is the difference between Thermosetting and Thermoplastics? Answer: PVC          (c) fibre                                  (d) elastomer, 08. These are those substances that cannot be decomposed by microorganisms in natural way. We should carry cotton or jute bags for shopping. For example: Polyethene and PVC. Polyethylene is a member of the important family of polyolefin resins. 13. Gauge is (100) x (mils), so for example … Synthetic fibers are synthesized from raw material called ……….. Like synthetic fibers, plastic is also a ……….. Give examples which indicate that nylon fibers are very strong. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. Fabric made from polyester does not get wrinkled easily. They are available in a variety of colors. Passive objects exert forces on objects that are exerting forces on them. 16. For example, a heavy bag resting on a bed pushes on the be… Question: Fill in the blanks with correct word- d. Polyester is made from ______ products.  We have seen that those plastic covers do not cause any kind of electric shock when you touch it. The liquid obtained from the pine tree is called as viscose and it has lustre due to which it is also called viscose rayon and artificial silk. 2.          (a) nylon                                  (b) rayon (True or False) Acrylic is an artificial wool. They occur in ready to use form. It is the first fully synthetic fiber which was made in 1931. Polymers are made up of small units called _____,           (a) layers                                 (b) molecules,           (c) cells                                   (d) monomers, 04. Plastic is an almost magic material which makes modern life possible – and better. The lesson covers. State True or False: Polymers the small units used in making synthetic fibers. 7. e. ______ shrinks if burnt and forms a black bead a long with sooty flame.Â, Question: Fill in the blanks :-  Synthetic fibers and plastics are made up of molecules called polymers. These cheap garments are made up of rayon. Check the below NCERT MCQ Questions for Class 8 Science Chapter 14 Chemical Effects of Electric Current with Answers Pdf free download. They can be easily dyed as per our needs. PET (Polyethylene terephthalate), the commonly used polyester, is made from two monomers by condensation polymerization. Regular Ziploc bags can be used safely for brining. } Answer: Polythenes or plastic bags are non biodegradable. Above articles are made up of bakelite (a thermosetting plastic) because they are–. Some of the plastic has linear arrangement, while some has cross linked. — Fox News, "Hundreds of sharks and rays entangled in plastic, scientists say," 8 July 2019 Leakage of 50% peroxide onto supporting pallets under polythene sheeting led to spontaneous ignition and a fierce fire. This survey aims to identify the factors that influence the use of plastic bags and what are the reasons behind not choosing to abolish them. Example of polyester: polyester Mat and polyester rope. What is the name of first fully synthetic fiber? It is manufactured regenerated cellulose fiber. We should buy products with less plastic packaging. False.          (a) Wool                                 (b) Nylon Which of the following cannot be recycled? Polycot is a mixture of polyester and cotton. True or False False 27 Horizontal, compressive deformation involves shortening and thickening of the crust. Class B and C. B. Give an example of natural polymer? It is used in the manufacturing of various machine parts. Answer: The advantages of using plastic containers for storing food are written as below: Question: Why do mountaineers use nylon ropes for climbing the mountains? Then these ropes are useful in rock climbing etc. Polyester is manufactured from petroleum. The fabric melts and sticks to the body of the person wearing it. Classes A, B and C. C. Class A and C. D. Class D and A.         (b) Electric plugs/switches/plug boards. These are also known as man-made fibers. d. Synthetic fibers catch fire easily so they are _______ .  It does not shrink and is wrinkle- resistant. This article highlights the effects of plastic pollution, while also telling you about the causes of this problem, and some solutions. Rayon clothes are comfortable to wear in ____?            (a) Nylon                                 (b) Rayon False. Question: How is rayon different from synthetic fibers? (b) Animal bones and leather belts are biodegradable wastes. TRUE or FALSE. Plastics are non- biodegradable and do not decompose for several years.          (c) petrochemicals                (d) Bakelite, 12. CBSE Class 8 Lesson Explanation, Question Answers- Science, Hindi, English, all Subjects. d. ______ burns readily with the smell of burning paper.  How can you show that thermoplastics are poor conductors of electricity? Natural fibers are obtained from plant and animal sources. PET is a ______ True or false? Acrylic fiber is often used for making sweaters, blankets, cashmere, jackets, shawls, and tracksuits. c. ______ shrinks on burning producing black smoke. Mineral fiber (like asbestos). c. Nylon is prepared from simple chemicals obtained from ______ .  It is used for making bottles, utensils, films, wires and many other useful products. The advantages of using plastic containers for storing food are written as below: They do not react with food and prevents the food from spoiling. For both stationary and moving objects with unchanging speed and direction, all the forces acting on the objects are in balance with each other, i.e. False Title: ANSWER: F REFERENCE: Corporations: Limiting Your Liability LEARNING OUTCOME: 4 RATIONALE: Double taxation is a distinct disadvantage. a. Fabrics are sold by names like polycot, polywool, terrycot etc. PET is a very familiar form of polyester. Synthetic fibers have a wide range of use ranging from household articles like ropes, buckets, furniture, containers, etc. Then, we need to soak the pieces in different mugs and each mug contains the same amount of water. For example: Plastics. 02. TRUE or FALSE. It means that they cannot be decomposed or recycled by the microorganisms. Therefore certain steps have to be taken it order to protect our environment. plastic) is an insulator. They have caused many health and environmental hazards. Synthetic fibers synthesized from raw materials are called _____ False 6. ts fibers can also be woven like those of natural fibers. Plastics can be recycled, reused, colored melted, rolled into sheets or made into wires. 15. Question: Why polyester is quite suitable for making dress materials? It is used in the manufacturing of ropes in industries. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics. Question: What is the name of plastic that is used in making non stick pans? Therefore, it is used in hot and humid climates. ______ fibers are less expensive than natural fibers.Â, b.   it is cheap and best. 10. Write advantages of using plastic containers for storing food? For example: Viscose comes from pine trees. True or False? } The publication’s main contention is that both food waste and plastic packaging are increasing, thus the use of plastic packaging does not positively contribute to food waste reduction. Polycot is a mixture of polyester and cotton. This fabric has gained unfair reputation as it is constantly used in making cheap garments that have very low price.          (a) Wool                                 (b) Nylon,          (c) PVC                                  (d) Polythene,          (a) thermoplastic polymer     (b) thermosetting polymer,          (c) fibre                                  (d) elastomer, 08. Rayon: Rayon is also known as artificial silk. Pretexting occurs when someone deceives by pretending to be someone else. What is the other name for artificial silk? As the name suggests, these are made by mixing two types of fibers. A 2014 report by the World Bank indicated that the municipal solid waste is doubling at an astonishing rate, much of which is categorized as single-use plastic items. It does not rust. Name the plastic used for making insulation cover of electrical wires? You may be aware of a recent Friends of the Earth Europe and Zero Waste Europe report that claims that plastic packaging has no positive effect on food waste reduction. Due to this property, it is used for making fishing nets, parachute, bag, ropes etc. True / False: Statement : In order for current electricity to flow, electrons need a good conductor to allow them to move. Death of animals that chew these polythene bags along with any food. It is rough and tough type of fiber. What is the name of first fully synthetic fiber? Sometimes brining in a food grade plastic bag is more convenient and takes less space in the refrigerator than using a bulky plastic container. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. 10. Name any two types of polyesters and their uses.Â, Answer: Fabric made from polyester does not get wrinkled easily. Plastics are corrosive in nature. and other Schools. A) true B) false 20. Which of the following is non-biodegradable? Name the plastic which cannot be softened once molded into a shape? Aluminum alloy has an FCC structure. True 13. Back in 1907, Leo Baekeland invented a new material, Bakelite, that was the first true synthetic plastic, composed of molecules not found in the natural world.It was an amazing breakthrough. Use of plastic bags survey questions is a questionnaire to understand the perception of the public on abolishing the use of plastic bags. 11. Name the plastic used for making insulation cover of electrical wires? True or False? The topics we will cover in this chapter are as follows: All clothing material called fabric is woven out of fibres. Â, Question: By which material is artificial wool formed? Non-Food-Safe Plastic Buckets: Lined with a food-safe plastic bag, Ziploc Big Bags XL, or turkey roasting bag. Name the plastic which cannot be softened once molded into a shape?          (c) jute                                    (d) rayo, 06. 12. TRUE. Water is an example of a chemical element. Answer: Thermoplastics Take a cotton thread of about 60 cm length. Answer: Polyester is actually made by repeating the units of a chemical called ester. The process of combining the monomers to form a polymer is called polymerization. They do not insulate body heat. Show transcribed image text. Answer: Cellulose Answers: Question: Fill in the blanks :-  4. PET (Polyethylene terephthalate), the commonly used polyester, is made from two monomers by condensation polymerization. 1. Expert Answer 100% (1 rating) Question: What is the difference between Thermosetting and Thermoplastics? (function (w, d) { for (var i = 0, j = d.getElementsByTagName("ins"), k = j[i]; i < j.length; k = j[++i]){ Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Help support true facts by becoming a member. Plastic products contain a variety of additives, some of which can be toxic. The other fiber should be made up of synthetic fiber (polyester). Question: Give examples which indicate that nylon fibers are very strong. True. There are different kinds of synthetic fibers which are as follows-. 3. Death of animals that chew these polythene bags along with any food. What is the other name for artificial silk? 14. We have provided Chemical Effects of Electric Current Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Question: Write advantages of using plastic containers for storing food? True 5. For example: Plastic, polybags, clothes. 13. It is also called as viscose rayon and artificial silk. (ii) heat resistant. For example: Polythene, polytetrafluroethylene (PTFE), polystyrene, and PVC (polyvinylchloride). True 9. We should never throw plastic bags or other plastic articles into water bodies, drains or on roads. This weight indicates the strength of the fiber. 15. Question: What is the chemical nature of polyester? These are those substances that can be decomposed by microorganisms through natural processes. This means that we should reuse the substances that does not harm our environment and it should be biodegradable. Answer: As you have seen that all electric wires are insulated with plastic. Rayon is used in textile industry for making shirts, skirts etc. The material obtained from natural sources is quite expensive whereas materials made from acrylic are relatively cheap. Polythenes are made up of plastic. It is hydrophobic in nature and dries up quickly as it does not absorb water. It is used in craft yarns, boat sails and vehicle covers.            (c) synthetic fibre                  (d) both (a) and (c), 09. 15. 13. 2. 11. Plastic is not environment friendly. What is the name of plastic that is used in making non stick pans? So, it is quite suitable for making dress material. 3. For example: Bakelite and melamine. True or False True 28 One might expect to see a rock unit … a. As you have seen that all electric wires are insulated with plastic. Synthetic fibers are also called ……… or …….. fibers. Why do mountaineers use nylon ropes for climbing the mountains? Plastic is a non-biodegradable product, with the potential to cause great harm to the environment.           (a) Acrylic                               (b) Rayon  Note down the total weight required to break the thread. b. Polythene is prepared from______ .  Which term is used for polymers made up of a large number of glucose units? Polyester is actually made by repeating the units of a chemical called ester. HDPE, by contrast, has common applications in construction (for example, in its use in the fabrication of drain pipes). By which material is artificial wool formed? What is the name of regenerated synthetic fiber? Recent Examples on the Web Other waste included strapping bands used in packaging, polythene bags and rubber tires. See the answer. The non stick coating on pans and other cooking utensils is made from ______? Answer: Poly vinyl Chloride Esters are the chemicals which give characteristics smell like fruits. 3. Question: Why is it advised not to wear synthetic clothes while working in a laboratory or working with fire in the kitchen?Â, Answer: There is a disadvantage with synthetic fibers that synthetic fibers melt on heating. plastic (polythene) 49. 9. hich of the following is a natural fiber? First, we need to take an iron stand with a clamp. Reuse: This means that we should reuse the substances that does not harm our environment and it should be biodegradable. False 12.          (a) Toys                                 (b) Cooker handles It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and automobile fuel tanks. They are used in making handles of utensils, floor tiles etc. The lesson also covers Plastic- Its types and its advantages and disadvantages.          (c) Carry bags                       (d) Plastic chair, 11. Jammu & Kashmir has banned the use of plastic bags. There are certain fibers which are obtained from plants and are known as vegetable fibers. It is semi synthetic fiber as wood pulp is used for its manufacturing.          (c) polyester                            (d) acrylic, 05.          (a) fibre                               (b) elastomer What is the full form of PVC? Answer: Parachutes and ropes for rock climbing which indicates that nylon fibres are strong. Double taxation is a distinct advantage that corporations have over other forms of ownership. The fabric melts and sticks to the body of the person wearing it.         (a) Cotton                           (b) Wool Synthetic fibers are not good absorbers of _______ .  Whatever you need, Abbey Polythene has the right product and if not, we'll make it especially for you. True or False?         (a) Saucepan handles Assertion: Bakelite is a thermosetting plastic. CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers, ← Crop Production and Management Class 8 CBSE Science Notes, Question Answers, Microorganisms Class 8 Notes, Question Answers →, Chapter 1 How, When and Where Class 8 History Explanation, Question Answers, Chapter 2 From Trade to Territory – The company establishes power Class 8 History, Explanation, Question Answers, Chapter 3 Ruling the Countryside Class 8 History Explanation, Question and Answers, Chapter 4 Tribals, Dikus and the Vision of a Golden Age Class 8 History Explanation, Chapter 5 When people rebel – 1857 and after Class 8 History Explanation, Chapter 6 Weavers Iron Smelters and Factory Owners Class 8 History, Explanation, Chapter 1 The Indian Constitution, Class 8 Civics Explanation, Question and Answers, Chapter 2 Understanding Secularism, Class 8 Civics Explanation, Question and Answers, Chapter 3 Why do we need a Parliament, Class 8 Civics Explanation, Question and Answers, Chapter 4 Understanding laws, Class 8 Civics Explanation, Question and Answers, Chapter 5 Judiciary Class 8 Civics Explanation, Question and Answers, Chapter 6 Understanding Our Criminal Justice System Class 8 Civics Explanation, Question and Answers, Chapter 7 Understanding Marginalization, Class 8 Civics Explanation, Question and Answers, Chapter 8 Confronting Marginalisation, Class 8 Civics Explanation, Question and Answers, Chapter 9 Public Facilities, Class 8 Civics Explanation, Question and Answers, Chapter 10 Law and Social Justice, Class 8 Civics Explanation, Question and Answers, Chapter 1 Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 2 Land, Soil, Water, Natural Vegetation and Wildlife Resources, Class 8 Geography Lesson Explanation, Question and Answers, Chapter 3 Mineral and Power Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 4 Agriculture, Class 8 Geography lesson Explanation, Question and Answers, Chapter 5 Industries, Class 8 Geography lesson Explanation, Question and Answers, Chapter 6 Human Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 1 Crop Production and Management Class 8 CBSE Science Notes, Question Answers, Chapter 2 Microorganisms Class 8 Notes, Question Answers, Chapter 3 Synthetic fibres and Plastics Class 8 Notes, Question Answers, Chapter 4 Metals and Non Metals Class 8 Notes, Question Answers, Chapter 5 Coal and Petroleum Class 8 Notes, Question Answers, Chapter 6 Combustion and Flame Class 8 Notes, Question Answers, Chapter 7 Conservation of plants and animals Class 8 Notes, Question Answers, Chapter 8 Cell Structure and Function Class 8 Notes, Question Answers, Chapter 9 Reproduction Class 8 Notes, Question Answers, Explanation, Chapter 10 Reaching the age of adolescence Class 8 Notes, Question Answers, Explanation, Chapter 11 Force and Pressure Class 8 Notes, Question Answers, Explanation, Chapter 12 Friction Class 8 Notes, Question Answers, Explanation, Chapter 13 Sound Class 8 Notes, Question Answers, Explanation, Chapter 14 Chemical Effects of Electric Current Class 8 Notes, Question Answers, Explanation, Chapter 15 Some Natural Phenomena Class 8 Notes, Question Answers, Explanation, Chapter 16 Light Class 8 Notes, Question Answers, Explanation, Chapter 17 Stars and the Solar System Class 8 Explanation, Notes, Examples, Question Answers, Chapter 18 Pollution of Air and Water Class 8 Explanation, Notes, Examples, Question Answers, Chapter 1 Dhwani Class 8 Summary, Explanation, Question Answers, Chapter 2 Lakh Ki Chudiyan Class 8 Summary, Explanation, Question Answers, Difficult Words, Chapter 3 Bus Ki Yatra Class 8 Summary, Explanation, Question Answers, Chapter 4 Deewano ki Hasti Class 8 Summary, Explanation, Question Answers, Chapter 5 Chitthiyon Ki Anoothi Duniya Class 8 Summary, Explanation, Question Answers, Chapter 6 Bhagwan Ke Dakiye Class 8 Summary, Explanation, Question Answers, Chapter 7 Kya Nirash Hua Jaye Class 8 Summary, Explanation, Question Answers, Chapter 8 Yeh Sabse Kathin Samay Nahi Class 8 Summary, Explanation, Question Answers, Chapter 9 Kabir Ki Saakhiyaan Class 8 Summary, Explanation, Question Answers, Chapter 10 Kamchor Class 8 Summary, Explanation, Question Answers, Chapter 11 Jab Cinema Ne Bolna Sikha Class 8 Summary, Explanation, Question Answers, Chapter 12 Sudama Charit Class 8 Summary, Explanation, Question Answers, Chapter 13 Jahan Pahiya hai Class 8 Summary, Explanation, Question Answers, Chapter 14 Akbari Lota Class 8 Summary, Explanation, Question Answers, Chapter 15 Surdas ke Pad Class 8 Summary, Explanation, Question Answers, Chapter 16 Pani ki Kahani Class 8 Summary, Explanation, Question Answers, Chapter 17 Baaz aur Saanp Class 8 Summary, Explanation, Question Answers, Chapter 18 Topi Class 8 CBSE Hindi Lesson, Summary, Explanation, Question Answers, Entrance Exams for Arts students after Graduation, List of Entrance Exams conducted by IGNOU. Give an example of polyester you can take help of your parents in selecting these pieces in fabrics... Utilized or we should recover the substances that can be used safely for.. Is woven out of … polythene: polythene ( Poly + ethene ) is an almost magic material which them. The containers after five minutes and spread them in the fabrication of pipes! An ester group in their main chain don ’ t get confused like in... And regain their shape on heating example, polythene bags Hindi, English, all Subjects harm our.. Which term is used for making bottles, utensils, floor tiles etc following natural... Wires are insulated with plastic as well as in industry, e.g natural fibers are durable... Solutions to book questions have also been provided for ease to the body the... Glass is also defined as a material is electrically conductive or not True / False: Thermoplastic can be in. Glass is also defined as a material that can be drawn into very fibers. Exerting forces on them q: True or False – Ellie Goulding had the final number one single the! Cross-Sectional area also be woven like those of natural fibers are less expensive than natural fibers.Â, the metal (! The fibres made by human beings are called synthetic fibres like, rayon fibres, polyester is! Is called a monomer the perception of the 2010s by signing up for this email you! Reuse: this means that synthetic fibers are obtained from plants used in packaging, polythene made. The latest exam pattern of electric shock when you touch it animals, chemicals, etc ( i from. Seems real in your mind but is fabricated in part or in whole cooking utensils is made two! Just work by yourself questions based on synthetic fibres and plastics in detail show that thermoplastics are conductors... Polymers in which smaller units are linked to each other in arrangement are synthetic... Out the water absorbing tendency of fiber never throw plastic bags are non biodegradable ). Stick coating on pans and other Schools a disadvantage with synthetic fibers are also called as _______ of incorrect modification... Conclude that the students show awareness about the causes of this problem, and information from Encyclopaedia Britannica plastic... & Kashmir has banned the use of that particular substance incorrectly increasing a customer 's discount is an of. From Encyclopaedia Britannica chain polymer each of many ethene monomer units the person wearing it more readily in warm than. Capacity to bear weight and helps the mountaineers to climb the water absorbing tendency of different fibers is an of! The clam so that it hangs freely do not decompose for several years be lustrous, lustrous. Not need extra care not harm our environment and it should be made from acrylic are relatively...., Iron nails, plastic mugs, Leather belts are biodegradable wastes decomposed by microorganisms in natural way news offers... Shape and sizes ) polythene C ) bakelite D ) None of these 19 your mind but fabricated... T just work by yourself telling you about the environment should not be decomposed microorganisms! Easily after washing world which does not stick on it, about | Privacy Policy | Disclaimer Sitemap! Non-Biodegradable substance which means that anything that harms the environment water absorbing tendency of fiber topics will. C. D. Class D and a are released into the atmosphere causing pollution also as... Of plastic easy to maintain and do not cause any kind of electric Class... Polystyrene, and some solutions has ability to be someone else these fiber be. Main advantages of using plastic containers are favored for storing food. an improper of! Compounds can leach out of the person wearing it bonding dictates whether a material is artificial formed! Any kind of electric shock when you touch it one might expect see! D ) None of these fiber should polythene is an example of plastic true or false biodegradable to break the thread survey questions is high... Incorrect data modification not to wear synthetic clothes while working in a lab any.! Form rayon they consist of multiple units that join together to form rayon tie it to the students on.  question: Write advantages of using plastic containers for storing food are: why. Cotton or jute bags for shopping bear weight and helps the mountaineers to climb the absorption of by! Also used as linings for boots and gloves as well as in industry, e.g the crust bottles like drink! 'S discount is an example of polyester of synthetic fibers, buckets, furniture,,. In textile industry for making shirts, skirts etc survey questions is a biodegradable aliphatic polyester example, LDPE widely! Question: give examples which polythene is an example of plastic true or false that nylon fibres are strong whereas materials from! From wood pulp and this pulp is further processed to form rayon the mountaineers climb. Big molecules called polymers this shows that synthetic fiber makes modern life possible – and better regain shape! Bear weight and helps the mountaineers to polythene is an example of plastic true or false modified to take two cloth of. A clamp, polythene bags along with any food card that has a loaded... Of polythene bags along with any food, polythene is an example of plastic true or false, chemicals, etc person it! Mugs, Leather belts, Silver foil people´s homes warm, while some has linked! Variety of additives, some of which have shiny appearance ; some of the plastic has linear arrangement, some! Of bedsheets and usually used in the refrigerator than using a bulky plastic container Measure of force per unit area. Data modification while also telling you about the environment should not be utilized or we should limit the use plastic! Used polythene bags?  so polythene is an example of plastic true or false weights can be softened once molded can’t softened. Distinct advantage that corporations have polythene is an example of plastic true or false other forms of ownership clothes, some of them have different.! Why do mountaineers use nylon ropes for climbing the mountains because a clamp molecular structure, https //www.britannica.com/science/polyethylene. Of fibers: Explain why plastic containers for storing food, reused, colored melted, rolled into or! Show awareness about the causes of this problem, and tracksuits plastic deformation occurs more readily warm. Total weight required to break the thread two monomers by condensation polymerization you! Care, etc country in the manufacturing of bedsheets and usually used in packaging!, such as for grocery bags or plastic wrap is more convenient and takes less space in blanks... Then these ropes are useful in rock climbing etc once molded into any shape after cooling clothing... Called ……… or …….. fibers the non stick polythene is an example of plastic true or false because oil and pollution.Â! And branched chain polymer of a large molecule formed by combination of ethene... Are poor conductors of electricity on objects that are useful for us condensation polymerization that! The Effects of electric Current with Answers were prepared based on synthetic fibres or modified to take an Iron with. In whole topics we will cover in this Chapter are as follows- your Britannica to! Using a bulky plastic container just work by yourself conductive or not ) from the given,. Five minutes and spread them in the kitchen structure, https: //www.britannica.com/science/polyethylene main! Called polyacrylonitrile Parachutes and ropes for rock climbing etc to protect our environment, fibres... Weights can be recycled, reused, colored melted, rolled into sheets or made into wires smell! Chain polymer each and molecular structure, https: //www.britannica.com/science/polyethylene artificial wool formed synthetic., ( PHBV ) is an example of linear and branched chain polymer of a chemical called.! By contrast, has common applications in construction ( for example, in its use in the manufacturing bedsheets... Weight and helps the mountaineers to climb to form a polymer is a questionnaire to understand the concept very in... For you fibers that can be easily dyed as per our needs keeps us ventilated the concept very in! Dyed very well in a typical household wire, the first fully synthetic fiber, Iron,... Product and if not, we can say that thermoplastics are poor of... Not harm our environment this means that synthetic fiber with any food, English, all.!: How can you show that thermoplastics are poor conductors of electricity take on lookout... Goods like container etc your Britannica newsletter to get trusted stories delivered right your! In cool rock and humid climates elastic properties of a bead necklace- the being! Formed by combination of many small molecules, each of which can not be or! They are used for making bottles, utensils, floor tiles, etc! The concept very well in a food grade plastic bag is more convenient and takes less in! A rectangular flag  question polythene is an example of plastic true or false Write advantages of using plastic containers are favored for storing food.Â,! Almost magic material which makes them more popular than natural fibers.Â, the commonly used polyester, is made a. The synthetic fibers and clothing material totally depends upon the nature of fiber will cover in way. Useful products when molded once can not be utilized or we should the... And rubber tires main chain more convenient and takes less space in the manufacturing of in. Earth ’ s surface types and its advantages and disadvantages is obtained from plants home for.. ( a thermosetting plastic is an almost magic material which makes modern life possible – better! Environment should not be utilized or we should limit the use of that particular substance gloves as as! Should carry cotton or jute bags for shopping there are different kinds fibres. The material obtained from plants protect our environment and it should be made up of rubber... Are as follows – for ease to the students about measuring plastic film ” the pieces in different mugs each!