Plastics may be amorphous solids, crystalline solids, or semicrystalline solids (crystallites) or any other form of solids. PLASTIC 1. It is used for making the handles of various cooking utensils(fry pans,pressure cooker) because, 2)It does not become soft on getting heated, It is used for making electric switches,plugs and sockets because. Materials are most of all the objects and therefore materials have its own properties. Plastic has light weight, lower price, good strength and easy handling. The plastics posses excellent electric insulating properties. What properties of plastics make it useful for many things ? They are poor conductors of heat and electricity. MCQ quiz on Plastics multiple choice questions and answers on Plastics MCQ questions quiz on Plastics objectives questions with answer test pdf. Chapter 17 Stars and The Solar System - Test, 8.03 Global Warming and Greenhouse Effect, 18.03 The Biogeochemical Cycles - Carbon Cycle and Greenhouse Effect, 18.4 The Oxygen cycle and The Ozone Layer, 18.04 The Oxygen Cycle and The Ozone Layer, 18.8 Pollution of Ganga River: A Case Study, 18.08 Pollution of Ganga River: A Case Study, 18.9 Purification of water and ways to reduce water pollution, 18.09 Purification of water and ways to reduce water pollution, Chapter 18 Pollution of Air and Water - Test. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Prepared by :- MOHAMMAD SIDDIQ SALIM III SEM - II YR B-arch POORNIMA UNIVERSITY, jaipur 2. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Synthetic fibres are those which are man-made and are obtained by the combination of different types of chemical substance and raw materials such as petrochemicals. 3. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. Plastics come from polymers, hence all plastics are polymers, but not all polymers are plastic. Which of the following properties of plastic makes it most convenient for use? 8. Filed Under: Class 8, Synthetic fibres and Plastics Tagged With: bakelite, melamine, plastics, polythene, polyvinyl chloride, teflon. 16. Painting and polishing is not necessary. A plastic is a synthetic material which can be moulded or set into desired shape when soft and then hardened to produce a durable article. Question 10 Write 1 characteristics of teflon? 1. *Class:- 8 *Sub:- Science *Question 1* List and explain four properties of plastics? [10] MAINTENANCE. 9. For chemically resistant plastic, view our Chemical Resistance of Plastics chart. TYPES OF PLASTIC. For Ex:Polythene,Polyvinyl chloride,Bakelite,Melamine,teflon etc. This strong and transparent plastic is a popular choice for light fixtures, beverage dispensers, and dishes. The plastics are not ductile and hence they fail without giving warning. (a)Polyster (b)Plastics (c)Both of these (d) None of these. The NCERT Solutions for Class 8 science chapter 3 contains all the information about NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and plastics. Thermoplastic: Plastics that can be deformed easily upon heating and can be bent easily.Linear polymers and a combination of … When you want to apply any type of load on a particular member, you need to know its material properties, density, etc. Special plastic cookware made of melamine is used in microwave ovens for cooking food. Melamine is a plastic which can tolerate heat better than other plastics and resist fire. (a)Thermoplastics (b)Thermosetting Acrylic plastic is a polymer material that contains acrylic acid. Students who are in Class 8 or preparing for any exam which is based on Class 8 Science can refer NCERT Science Book for their preparation. Hurry! Synthetic Fibres and Plastics. Name some artificial fibres. Synthetic fibres … A) It is non-reactive. Your email address will not be published. Class 8 Science Plastics Notes and Important Points Plastics Any Synthetic material which can be easily moulded into any desired shape on heating is called plastic.Plastic is also a polymer like the synthetic fibres.There are two types of arrangement in plastics linear and cross linked. Characteristics of synthetic fibres. Plastic is a synthetic material made from a wide range of organic polymers such as polyethylene, PVC, nylon, etc., that can be moulded into shape while soft, and then set into a rigid or slightly elastic form. CBSE Science Class 8. The plastics industry is a significant contributor to the global economy. Question 2 Give few examples of plastics? Last Updated on September 29, 2020 By Mrs Shilpi Nagpal 3 Comments. 2. There is no maintenance cost for plastic articles i.e., they do not need painting and polishing. NCERT Book for Class 8 Science Chapter 3 Synthetic Fibers and Plastics is available for reading or download on this page. Answer: Protein Question 3. Plastics can be bolted, drilled, glued, clamped or simply push fitted in position. Required fields are marked *. 16.6 Can a Visually Challenged Persons Read and Write? 5. In general different properties of materials are enlisted below. A plastic called Teflon is used in making Nonstick coat on the cookware. Video what are the properties of plastic ? Characteristics properties of plastics. Apply coupon WELCOME21 at checkout and avail 21% discount on your order. The plastics that act as insulators mostly have a high dielectric strength. Plastics are also polymers.They consist of very long molecules made by joining many small molecules together. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. They are cheap compared to metals. Properties of plastics vary depending on the chemical composition, arrangements and the processing method of its subunits. The challenge can be used flexibly as part of the formal science and design and technology curriculum in the UK, […] 10.Name the plastic, which deformed easily on heating and can be bent easily. Types of Plastics. Synthetic Fibres and Plastics - Chapter Wise CBSE Solved Question and Answer Based On NCERT. 9. Plastic uses in various fields. [8] DUCTILITY. Synthetic Fibres and Plastics Class 8 Science Chapter 3 - Synthetic Fibres and their Properties. Melamine plastic is used in the uniforms of firemen which make them flame resistant. Short Q&A: Q1: Differentiate between natural and artificial fibres. ... We can modify the chemistry of the material to provide specific beneficial properties for its end use, including the option to make it softer, harder, malleable, or durable. explains properties like plastic is nonreactive, plastic is light strong & durable, etc for CBSE Class 8 Science. Bakelite:It is a very hard and tough plastic.It is a poor conductor of heat and electricity. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. NCERT Solutions Class 8 Science; Plastics. It is non-reactive; Plastic is a poor conductor. Synthetic Fibres and Plastics class 8 Notes Science in PDF are available for free download in myCBSEguide mobile app. Since materials have these properties it makes the materials useful and purposeful to use. Metals and Non Metals Class 8 Science Chapter 4 as per NCERT Book used in CBSE and other Schools. Name a natural fibre. The best app for CBSE students now provides Synthetic Fibres and Plastics class 8 Notes Science latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Polythene:It is a plastic obtained by the polymerisation of a chemical compound known as ethene.It is tough and durable.It is used in making polythene bags,waterproof plastic sheets, bottles,buckets,dustbins. For that, in this article, I am exploring the necessary properties of polymers in a detailed manner. 7. Plastics generally possess sufficient durability, provided they offer sufficient surface … Plastics are an affordable material. 6. She has started this educational website with the mindset of spreading Free Education to everyone. Question 8. Plastic is non-reactive: (i) Plastics do not react with water and air that’s whyit does not get rusted like iron. To understand the properties of material explore the article! 9._____ can be recycled, reused, melted and rolled into sheets. The main physical difference between the two is that one can be reused time and again, and the other cannot. Give one use of plastics linked to each of these properties? Synthetic fibres possess following unique characteristics: They are durable and inexpensive. Oil and Water do not stick on a plastic called Teflon,So Teflon coating is used in utensils FireProof Melamine Plastics do not catch fire easily So they are used to make uniform of fireman which makes them flame resistant Disadvantages of Using Plastics Plastics are Non Biodegradable They do not get easily decomposed by natural processes Dismiss, 1.1 Agricultural Practices and Cropping Pattern, 1.01 Agricultural Practices and Cropping Pattern, 1.06 Protection from Weeds and Harvesting, 1.07 Storage of Foodgrains and Food From Animals, Chapter 1 Crop Production and Management - Test, 2.1 Microorganisms: Classification and Habitat, 2.01 Microorganisms: Classification and Habitat, 2.04 Food Preservation and Food Poisoning, 2.05 Nitrogen Fixation and Nitrogen Cycle, Chapter 2 Microorganisms Friend and Foe - Test, 3.1 Synthetic Fibres and their properties, 3.01 Synthetic fibres and their properties, Chapter 3 Synthetic Fibres and Plastics - Test, 7.01 Physical Properties of Metals and Nonmetals, 4.01 Physical Properties of Metals and Nonmetals, 7.02 Chemical Properties of Metals and nonmetals: Reaction with Oxygen and Water, 4.02 Chemical Properties of Metals and Nonmetals: Reaction with Oxygen and Water, 7.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, 4.03 Chemical Properties of Metals and Nonmetals: Reaction with Acids and Bases, and Displacement Reaction, Chapter 4 Materials: Metals and Nonmetals - Test, 10.2 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.02 Types of Combustion Reaction, Ignition Temperature and Fire Control, 6.3 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 7.03 Conservation of Forest and Wildlife: Wildlife Sanctuary and Biosphere Reserve, 6.4 Conservation of Forest and Wildlife: National Park, 7.04 Conservation of Forest and Wildlife: National Park, 7.05 Recycling of Paper and Reforestation, Chapter 7 Conservation of Plants and Animals - Test, 11.2 Variety in Cell Number, Shape and Size, 8.02 Variety in Cell Number, Shape and Size, 10.01 Structure, Function and Parts of Cell: Basic Components, 8.03 Structure, Function and Parts of Cell: Basic Components, 10.02 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, 8.04 Structure, Function and Parts of Cell: Other Components and Comparison of Plant and Animal cells, Chapter 8 Cell - Structure and Functions - Test, 12.2 Sexual Reproduction: Reproductive System, 9.02 Sexual Reproduction: Reproductive System, 13.1 Adolescence, Puberty and Reproductive Phase of Life, 10.01 Adolescence, Puberty and Reproductive Phase of Life, Chapter 10 Reaching The Age Of Adolescence - Test, 3.05 Pressure exerted by Gases and Atmospheric Pressure, 11.07 Pressure exerted by Gases and Atmospheric Pressure, 8.3 Increasing and Decreasing the Friction, 12.03 Increasing And Decreasing The Friction, 9.4 Amplitude, Time Period And Frequency of Vibration, 13.04 Amplitude, Time Period And Frequency of Vibration, 14.02 Chemical Effect of Electric Current, Chapter 14 Chemical Effects of Electric Current - Test, 15.1 Electric Charge: Nature, Types and Transfer, 15.01 Electric Charge: Nature, Types and Transfer, 16.3 Multiple Images, Kaleidoscope and Dispersion, 16.03 Multiple Images, Kaleidoscope and Dispersion. 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