→ These are the plastics, which when moulded once, cannot be softened by heating. Name a common variety of polyester. It is used for making floor tiles,unbreakable kitchenware,ashtray and fire resistant fabric. While sorting out the things Riya found many of her clothes of various fabrics were not fitting her or worn-out. 6. (c) Terrysilk (a) What is the full form of PVC? (b) Nylon (c) Nylon 9. Melamine and its salts are used as fire-retardant additives in paints, plastics, and paper. They are cheaper in cost as compared to natural fibres. Some uses for melamine are whiteboards, floor tiles, kitchenware, fire retardant fabrics, and commercial filters. Melamine is a name used both for the chemical and for the plastic made from it. Which of the following is natural fibre? (c) Shoes Question 5. Question 10. (a) Nylon (a) Rayon Plastics should be recycled to make other useful products which do not harm the environment. (a) England Synthetic Fibres and Plastics Class 8 Extra Questions Long Answer Questions. Answer: 10. cellulose, starch Answer. 7. Its help you to complete your homework. Question 5. (b) cellulose Synthetic fibres shrink a lot when washed. (a) coal Nylon is the strongest amongst all the synthetic fibres. Activities and Projects (b) Silk 15. Bakelite and melamine are thermoplastics. (b) Melamine (a) Cotton Question 12. Answer: (b) (b) elasticity False Melamine is also used as a fertilizer due to its high nitrogen contents; however, it is much costlier to produce than other nitrogen fertilizers like urea. 12. The property of materials by which they can be moulded into any shape is called Write uses of melamine plastic. 5. Here we give Chapter 3 all solution of Class 8. Answer: What is polythene? (b) 1964 It is used for making floor tiles, kitchenware and fabrics which resist fire. Question 1. Polythene and polyvinyl chloride. Which fibre is known as artificial silk? What is plasticity? This is actually a disadvantage with synthetic fibres. Question 1. Name a natural fibre. (b) The government should ban the use of plastic bags. (c) Polyester They absorb less water and are quick to dry. The two uses of rayon are: Question 6. Give the name of a plastic used for making fibres. When combined with cyanuric acid, which may also be present in melamine powder, melamine can form crystals that can give rise to kidney stones. Answer: Answer: (d) rayon, Question 13. 13. (i) Explain the properties of plastics. Text Book – SCIENCE. (c) Synthetic clothes emits poisonous gases on burning. Plastics are those substances which are mostly synthetic in nature, obtained mainly from petrochemi¬cal sources and can be moulded into different shapes. False (c) 1948 Find out organisations in your area which are carrying out awareness programmes. If use of plastics are not reduced, our earth would turn into a big garbage bin. Answer: Question 8. It is used to make socks and stockings as it is elastic. Answer: Why plastic items are available in all possible shapes and sizes? How to Use a Magic Eraser. Lakhmir Singh Science Class 8 Solutions Chapter 3 Synthetic Fibres And Plastics provided here is prepared by subject experts, according to the latest CBSE syllabus. Lakhmir Singh and Manjit Kaur Science solution: Synthetic Fibres and Plastics Chapter 3. 12. NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibers and Plastics Topics and Sub Topics in Class 8 Science Chapter 3 Synthetic Fibers and Plastics: Section Name Topic Name 3 Synthetic Fibers and Plastics 3.1 What are Synthetic Fibers? KPL International Limited also deals in automotive and industrial electronics, textiles and renewable energy. 143 Qs. Name the largest producer unit of rayon in the world. Answer: (d) PET, Question 12. List the common varieties of polyester. She decided to make some items like pen keeper, purses, toys, etc., using old fabrics and plastics. Cotton is a natural polymer. Protein. What nature of plastics makes them a good storage containers for most of the articles? Have you heard of the campaign: “Say No To Plastics”. It is a leading producer of chemicals in India with over five decades of experience. Plastics are the bad conductor of heat. Question 10. 13. (d) monomers, Question 11. It is therefore advised not to wear synthetic clothes while working in a laboratory or working with fire in the kitchen. The synthetic fibres melt on heating. (c) 4R’s stands for Redue, Reuse, Recycle and Recover. → They are light, strong, and durable. True (c) Polyester Some of the strategies for plastic waste management are: Question 1. (b) How can we reuse any plastic items? Question 9. (d) all of these, Question 5. KPL International Limited has over 3000 customers with its ISO 9001 qualification and specialization in sourcing, distribution and marketing. Magic erasers are a powerful cleaning tool that you can use to remove stubborn marks from hard surfaces all around your house. He has three types of plastic-Bakelite, Teflon and PVC. (e) What values of Riya and Shweta are shown here? 4. (b) Rayon Bakelite and melamine. Melamine is an organic compound which on combining with formaldehyde forms a very durable thermosetting plastic. Answer: False Answer: Melamine resin makes it very durable and shatter-resistant, making melamine products more desirable than other plastic housewares. 2. man-made Finding your suitable readers for nicole miller home dynasty melamine appetizer plates is not easy. (d) Plastics are corrosive in nature. Features of Melamine Plastics: ... Foundation Chemistry Class 8 Chapter 1 & 2 part I. Answer: Plastics are non-biodegradable, i.e., they do not get decomposed by microorganisms. ____________ is an example of thermosetting plastics. (b) (b) Natural fabrics are known to be skin friendly because they absorb moisture and do not contain chemicals as that of synthetic fibres which may cause skin irritation. (a) Nylon We should not throw plastic wastes in water bodies. Terrywool is made by blending polyester and silk. Riya’s father got a transfer to another place. Melamine is categorized under Class #7 on the list of Plastic Resin Codes. Polythene is a polymer of ethene. False 13. 8. True 13. (b) Cotton The use of plastics can be reduced by using bags made of—jute—-or—paper—- instead of polythene bags. 10. Is using plastics for storing food safe? The common varieties of polyester are: Question 4. (a) Acrylic Write some advantages of synthetic fibres. Answer: (b) petroleum 5. CLH report Proposal for Harmonised Classification and Labelling Based on Regulation (EC) No 1272/2008 (CLP Regulation), Annex VI, Part 2 International Chemical Identification: 1,3 Board – CBSE. (c) Rayon True 8. Melamine is sometimes added to food products to illegally increase the apparent protein content. Crockery Answer: Devise an activity to show that organic waste is biodegradable while plastic is not. In which year was nylon made? Raw materials for preparation of synthetic fibres are 6. ____________ is the property of materials by which they can be moulded into any shape. Advantages of synthetic fibres are: Question 9. (d) none of these, Question 14. 3.2 Types of Synthetic Fibers Rayon 3.3 Characteristics of Synthetic Fibers 3.4 Plastics 3.5 Plastics as […] What are polymers? Also mention the natural fibres which are used for blending to enhance their properties. Name some objects made of plastics. 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(b) Heat conductors The shopkeeper showed her blankets made of acrylic fibres as well as made of wool. Biodegradable, Question 17. Rayon, Question 5. Melamine partially evaporates from the nylon 6-melamine (30%) composition, whereas the other part condenses giving 8% of solid residue at 450 °C. Answer: Question 1. (c) Silk Practicing 4R’s, i.e.,____________ ,____________, ____________ and ____________ should be encouraged. Why? (f) Dear Student, Please refer the answer given by Nitesh. 15. 4. Synthetic fibres are (a) 6. rayon 3. coal, petroleum, natural gas (a) durable What is ester? 8. Nylon is used in combs and toothbrushes. Melamine is a plastic which can tolerate heat better than other plastics and resist fire. Take some organic waste (like peels of fruits, vegetables) in a beaker and some plastic waste materials in other beaker. Answer: Melamine resin may be used in many aplications and has a very stable structure. List any two properties of rayon. (d) Cotton, Question 8. 14. Reduce, Reuse, Recycle, Recover Answer: Polyester could be blended with natural fibres to enhance its properties. We should use a special garbage bins to dispose plastic wastes. 3. It finds uses as an insulating and soundproofing material and more recently as a cleaning abrasive. The basic component of plant fibres is Answer: It was made in 1931 for the first time. (g) List two uses of rayon. Question 2. They specialize in the distribution and marketing of quality products in India, mainly in the field of paper, paper chemicals, chemicals, and polymers, sourced from global acclaimed manufacturers. However, similar behaviour with a more thermostable residue is shown by melamine cyanurate. Draw a diagram to show the: Synthetic Fibres and Plastics. But her friend Shweta suggested to donate it to some charity house so that it can be reused. What is cellulose? Jammu & Kashmir has banned the use of plastic bags. It is used to make apparels like shirts, blouses, etc. Though storing and carrying food in plastic container is more efficient. Coin a few more slogans of this kind. (c) natural gas List any three properties of plastics. What are thermosetting plastics? Answer: Question 1. 4. If there is none, form one. If you wish to know more about fibres and plastics and the products made from them, you may explore the following website: Answer: Melamine is a versatile material. It is used in making home furnishings and apparels. (d) All of these, Question 15. Rayon is a natural fibre. Answer: Blanket made of acrylic is cheap, durable, light in weight, available in variety of colours and provide the same warmth as that of wool. (a) What are the two main types of fibres? In which country was rayon first time synthesised? Question 13. What are the uses of polyester? (b) wool → They are poor conductors of heat and electricity. Which fibre is used as artificial wool? A device with holes which is used to make fibres is called ____________. Melamine is a versatile material. Yes, plastics are hazard to environment. 11. Write the advantages of synthetic fibres. Question 11. Organisations which are carrying out awareness programmes are – Conserve India, TMAD (To Make A Difference, Bengaluru), etc. Nylon was made in 1931. 7. Terrywool: It is made by blending polyester and wool. Nylon, Question 20. Mark them as A and B respectively. (a) 1931 Cover the wastes in both the beakers with soil. Which of the following is synthetic fibre? (h), IV. 1. The reason i ask is i built a melamine enclosure for one of my BCC's and recently, she urinated ALOT while i was asleep and i didnt get around to cleaning it until i came home from class and running errands (roughly 8-10 hours later) and the area where she urinated seems to have "cracked" and now the wood underneath has soaked up a bit of moisture and expanded substantially. (e) True Terrysilk: It is made by blending polyester iaiid silk. Answer: Plastics are those substances which are mostly synthetic in nature. 5. Question 12. (b) melamine It is used for making floor tiles, kitchenware and fabrics which resist fire. Melamine foam is a special form of melamine resin. Answer: (a) conductivity Answer: Answer: Answer: 1. Polyester is used for finishing on guitars and pianos. 2. Ester is sweet-smelling compound. 17. Answer: 12. spinneret View More Information about: Melamine More Information about Buying, Selling and doing Business with Melamine Suppliers / Providers of Melamine … 4. (a) Answer: 3. Polymers are compounds that are made up of same, small repeating units, joined together through bonds in a linear pattern. (c) starch 8. 2. Common variety of polyester is 9. (d) spinneret, Question 10. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. The resin is a versatile material that has a highly stable structure. Raw materials for preparation of synthetic fibres are obtained from substances like ____________, ____________ and ____________. Plastics are non-biodegradable in nature. Nylon. Make a short report and submit it to your teacher. Melamine-formaldehyde resin, any of a class of synthetic resins obtained by chemical combination of melamine (a crystalline solid derived from urea) and formaldehyde (a highly reactive gas obtained from methane).A complex, interlinked polymer that cures to a clear, hard, chemically resistant resin, melamine formaldehyde is employed in plywood and particleboard adhesives, laminated … Answer: The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. The property of materials by which they can be moulded into any shape is called ____________ fibre is stronger than steel wire of same thickness. Related Questions to study. ____________ are made up of small repeating units, joined together through bonds in linear pattern. Though it is in very small amount but continuous use of it is exposing our body to harmful and poisonous chemicals. (d) Wood, Question 3. (b) straws Answer: I. (d) 1950, Question 7. Answer: It resists fire and can tolerate heat better than other plastics. Answer: False Following are the properties of plastics: Question 5. Fill in the blanks with suitable word/s. Melamine, a colourless crystalline substance belonging to the family of heterocyclic organic compounds, which are used principally as a starting material for the manufacture of synthetic resins. Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. (c) economical She preferred to buy an acrylic blanket. (d) Why synthetic clothes are famous than natural fabrics? 8. They make versatile materials but are very dangerous to the environment. Name the basic component of animal fibres. Thereafter, this contamination was found in many other products that use protein content as … Melamine is a chemical compound that has a number of industrial uses, including the production of laminates, glues, dinnerware, adhesives, molding compounds, coatings and flame retardants. Terylene is a common variety of polyester. Looks and feels like fine porcelain and ceramic ‘Plastics are hazard to environment’. False Do it yourself. Observe both the beakers after one or two months. It is observed that organic waste has been disappeared in the soil while plastics are still in the beaker. Question 1. Match the following Answer: It is a polymer of amides. Aperson has to make a non-stick pan. 11. 3. It was used as a supplement of silk when silk got deficient during World War II for many military applications. Electric wires are coated with—PVC——. TCC’s Melamine is an organic compound that is often combined with formaldehyde to produce melamine resin, a synthetic polymer that is fire resistant and heat tolerant. (a) plastic (d) NCERT Solutions for Class 8 Science Chapter 3 – 2 Mark Questions and Answers. 11. Question 3. (d) duroplast Answer: Answer: Required fields are marked *, You may use these HTML tags and attributes:

, KPL International Limited © 2016, All Rights Reserved. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Slogans-. (c) Why we should not burn synthetic clothes? It results in a concrete with higher mechanical strength and a lower porosity, exhibiting a longer lifetime and an improved resistance to corrosive environments. Choose the correct option. Synthetic fibres do not absorb much ____________. Bakelite, Question 19. 15. Which of the following polyester is made by blending polyester and cotton? Download the solution in PDF format for free, by visiting BYJU’S Next Next Chapter 4 >> Class 8 Science Question-answers. 1. 5. 9. Terylene. 7. Chapter – 3 It is used to make furnishings and upholstery. Melamine can be manufactured from Answer: Class-8 » Science. (b) We can reuse plastic bags for storing dry things. (d) Nylon, Question 9. Which plastic will he use for coating and why ? Cellulose is a polymer made up of large number of glucose units. You may need consider between hundred or thousand products from many store. Children may be given an option to role play as manufac¬turers of synthetic fabrics or those of fabrics from natural sources. (b) polymer Question 3. (a) Bakelite 7. Rayon is the first man-made cellulose fibre. Polyester is the strongest synthetic fibre. If the cloth catches fire it can be very disastrous. Question 16. We can reuse plastic bottles for storing dry food grains or a pen keeper, etc. (c) (d) none of these, Question 4. (b) Terrycot Plastics that retain their plasticity on repeated heating are called Synthetic fibres may be synthesised by two ways: Question 4. PHYSICAL PROPERTIES OF MELAMINE Page in Marketizer.com - The World's Leading Industrial Portal, offering Business Tools and Information. Acrylic resembles ____________. Plastic that can resist fire is (d) Non-biodegradable, Question 20. Melamine is also used as fire retardant additives in paints, paper and plastics. The uses of polyester are: Question 14. (c) jute Nylon, terylene, PET, acrylic, teflon, etc. List the strategies for plastic waste management. 15. Practicing 4R’s principle, i.e., Reuse, Recycle, Reduce and Recover should be encouraged. This means that it is a widely used plastic that does not fit into the more commonly used #1-6 classifications and should not be thrown in your recycling bin. 14. water If the plastics are disposed in drains, they choke the drains causing waterlogging. (a) Electrical conductors (c) plasticity (b) 1. fibres Question 15. 9. Which of the following is known as artificial silk? Fill in the Blanks This shows that organic waste are biodegradable whereas plastics are non-biodegradable. 10. Organise a debate in the school. (c) Do it yourself. Question 14. (a) Two main types of fibres are natural and man-made fibres. (c) viscose Special plastic cookware made of melamine is used in microwave ovens for cooking food. Answer: (a) Clothes we wear are made up of thin strands called ____________. 2. (b) thermoplastics (d) Synthetic clothes are famous than natural clothes because they are light, durable, cheaper, easy to maintain, moth resistant and available in various colours. List the two ways in which synthetic fibres can be synthesised. Question 2. 4. Nylon is used in toothbrushes, combs, etc. Question 1. 15. melts, III. But chemicals used for manu-facturing plastics leeches out into the food and contaminates it. We should use paper bags and jute bags instead of using plastic bags. Question 11. Answer: Question 4. (a) thermosetting plastics Answer: (c) cells (d) Plastics can be moulded to any shape. (a) terylene Which of the following is a characteristic of plastics? (c) thermal plastics 18mm outdoor usage first class veneer shuttering boards laminated plywood sheets melamine faced plywood. It contains 67% nitrogen and has fire retardant properties when mixed with resins due to the release of the nitrogen gas while burning. Answer: If these plastics are swallowed by the innocent animals along with their food, they harm their di-gestive system which leads to their death. Melamine is sometimes added to food products to illegally increase the apparent protein content. 6. (d) Handbags, Question 16. Examples: bakelite and melamine Characteristics of plastics → They are non-reactive. What is 4R’s? A lady went to the market to buy a blanket. Plastics are non-corrosive in nature, i.e., they do not react easily with air and water. Whether cotton cloth a biodegradable or non-biodegradable? (a) compact discs Melamine alone causes bladder stones in animal tests. (c) bottles http:/ /www.pslc.ws/macrog/index.htm Artificial silk is another name of ____________. 11. Polymers Melamine is also used as a fertilizer due to its high nitrogen contents; however, it is much costlier to produce than other nitrogen fertilizers like urea. Terrycot: It is made by blending polyester and cotton. Write some properties and uses of melamine. 2. Explain this statement. Answer: Describe about nylon. The foam products can be used for removing scuffs and dirt from a wide range of surfaces. Melamine is also used as fire retardant additives in paints, paper and plastics. Name some artificial fibres. If plastics are burnt, they evolve poisonous gases. Class – 8. Share 3. Polymers are made up of small units called Piku is very fond of art and craft. (a) Terrywool Answer: Why is it advised not to wear synthetic clothes while working in a laboratory or working with fire in the kitchen? What are plastics? It takes more than 100 years to decompose. (b) Which fabrics are known to be skin friendly? The uses of melamine clean energy mini-grids also plays the vital role of energy … Wood pulp is used to make Share with your friends. KPL International Limited is an arm of Kanoria Chemicals & Industries Limited (KCI), which is a very diversified company with OHSAS 18001, ISO 14001 and ISO 9001 certification. Answer: Which of the following is a thermoplastic? State whether the given statements are true or false. (b) Rayon Digital NCERT Books Class 8 Science pdf are always handy to use when you do not have access to physical copy. Let’s find out which is your favorite one. (d) (a) layers (d) 11. Rayon synthesised for the first time in England. Sulfonated melamine formaldehyde is used as a cement admixture to increase the fluidity and workability of the mixture while reducing the water content in the mixture during its handling and pouring. (a) protein Cotton, Question 2. Use of plastics Answer: Give some examples of thermoplastics. it is used for coating the outer surface of the utensils so that they do not catch fire and no damage occurs. (b) False NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12, Question 1. By regenerating them from natural fibres, like in rayon. The three properties of plastics are: Question 13. (c) Piku is sensible, creative, responsible to nature, mature and eco-friendly. The fabric melts and sticks to the body of the person wearing it. 6. (a) linear arrangement of units in plastic. Some of them are as follows: Question 3. (e) Riya is ignorant and non-ecofriendly whereas Shweta is insightful and eco-friendly. (b) cross-linked arrangement of units in plastic. Question 2. Plasticity is the property of materials by which they can be moulded into any shape. Answer: 4. 3. (c) PVC Bakelite is a Polymer made up of the Monomers Phenol and Formaldehyde. Match the items given in column I suitably with those given in column II. These gases destroys the ozone layer of the earth and also pollute the environment. (a) bakelite 3. (d) Cotton, Question 2. They are manufactured by the consumption of a large amount of petroleum. Answer: Visit five families in your neighbourhood and enquire about the kind of clothes they use, the reason for their choice and advantages of using them in terms of cost, durability and maintenance. Melamine pyrophosphate like dimelamine phosphate 27 gives about 15% of thermostable char. Write its uses and properties. In this article, we make a short list of the best readers for nicole miller home dynasty melamine appetizer plates including detail information and customer reviews. (b) A melamine fibre, Basofil, has low thermal conductivity, excellent flame resistance and is self-extinguishing; this makes it useful for flame-resistant protective clothing, either alone or as a blend with other fibres. (a) No, it is not at all practical to say completely ‘NO’ to plastics because nowadays plastics are insepa-rable part of our daily life. 13. wool They can then debate on the topic ‘My Fabric is Superior’. Synthetic fibres ____________ on heating. (b) Crockery Melamine cannot be melted for recycling like other plastics. Synthetic fibres are moth and insect resistant. Melamine was initially found in food stuffs exported to the USA in early 2007 contained in contaminated wheat gluten and rice protein and had resulted in the death of several pet dogs and cats. 5. (d) The material which is commonly used for making kitchen containers is : MEDIUM. MEDIUM. Question 4. Name a synthetic fibre which is polyamide. Cellulose. KCI has two chemical manufacturing plants, One is in Ankleshwar of Gujarat state, which produces Alcohols and other Alcohol based chemicals and the second one in Vishakhapatnam of Andhra Pradesh which produces Hexamine and Formaldehyde. 20. Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 3 . US $310.00-$435.00 / Cubic Meter. (a) Bottles Question 5. 10. Rayon synthesised for the first time in ____________. 2. Q Squared's restaurant-grade melamine can withstand the rigors of everyday use and is also more resistant to scratch marks and use and abuse over time. 1. True It is used to make parachutes, tents, ropes, etc. (b) wrinkle free (a) Is it practical to say completely ‘NO’ to plastics? They are unaffected by most of the chemicals in normal conditions. Polycarbonate is used to make (a) Nylon (c) What value of Piku is shown here? 12. Answer: Thermosetting plastics are those which when moulded once, cannot be softened again and lose their plasticity. True (d) jars, Question 17. Answer: It provides ample of services and E2E business solutions to their customers. Can you guess why? Answer: Answer: Answer: Answer: 5. 14. (d) all of these, Question 18. 10. It is fully synthetic polymer which is prepared from coal, water and air. One of the biggest Melamine supplier in India is KPL international limited which is established about two decades ago. Question 2. If plastics are burnt, they evolve oxygen gas. (c) Biodegradable They do not get heated up like metals. What is its chemical name? (d) Silk, Question 6. 16. They are very useful for saving our trees and animals as they are made up of chemicals. Here you can read Chapter 3 of Class 8 … There are certain governmental and non-governmental organisations who educate the general public on how to make wise use of plastics and develop environment friendly habits. Learn about the Structure, Properties, and Uses of Bakelite and How it is Made. Rayon is a man-made fibre which is produced by the chemical processing of wood pulp, i.e., a natural substance. Question 2. Answer: Answer: Chapter 1. Grasim India, Question 8. Give some examples of thermosetting plastics. 7. 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. Answer: (d) none of these, Question 19. Write some properties and uses of melamine. True (b), II. Melamine is rich in nitrogen, a property that is similar to protein. Describe about nylon. Biodegradable plastics are being developed from plant materials such as ____________ and ____________. 8. Multiple Choice Questions (MCQs) Do it yourself. Name the first fully synthetic fibre. 14. melamine is a thermosetting plastic and does not melts down on heating. England, Question 6. (d) Fibres may be natural or ____________. Plasticity PET (Polyethylene Terephthalate), Question 18. Melamine can also be used as a pesticide, It forms a major component in pigment yellow 150, which is a colorant in plastics and inks, melamine is also used as a super plasticizer to make high resistant concrete. Question 3. The two properties of rayon are: Question 7. Dry food grains or a pen keeper, purses, toys,,... Those of fabrics from natural fibres which are carrying out awareness programmes exposing our to. And fire resistant fabric form a laminate that covers a variety of polyester is used blending! Singh and Manjit Kaur Science solution: synthetic fibres has many Advantages as compared to natural fibres enhance. Following are made out of porous melamine, Recover 12. spinneret 13. 14.! Destroys the ozone layer of the campaign: “ say no to plastics the things Riya found many her... The outer surface of the articles some charity house so that it can be synthesised by two in! Shweta is insightful and eco-friendly the foam products can be moulded into any shape those in... Laminate that covers a variety of polyester is used for making floor tiles, kitchenware and fabrics which resist.... It is used to make parachutes, tents, ropes, etc, making products. Should be recycled to make a Difference, Bengaluru ), Question 18... Foundation Chemistry Class Extra! 'S Leading Industrial Portal, offering Business Tools and Information the food and contaminates.! How it is used for making fibres first time you get easy solutions of Singh! Solution Chapter 3 all solution of Class 8 Science pdf are always handy to use a Magic.. Use to remove stubborn marks from hard surfaces all around your house sorting out the things Riya found many her! To harmful and poisonous chemicals fibres has many Advantages as compared to natural fibres e ) are! Using entirely chemicals and chemical reactions, like in Rayon, distribution and marketing not fitting her worn-out. Blankets made of Acrylic fibres have been explained all the synthetic fibres are: 5. ), etc a name used both for the chemical and for the plastic made thermosetting! Shows that organic waste has been disappeared in the beaker which when moulded once, can not be softened and! Reuse, Recycle, reduce and Recover her blankets made of melamine plastics:... Foundation Chemistry 8. Plastic made from thermosetting plastic famous than natural fabrics Question 14 Handbags, Question 18 also used as retardant! Like pen keeper, purses, toys, etc., using old fabrics and filters... He has three types of plastic-Bakelite, Teflon, etc residue is shown melamine... Enhance their properties food, they do not catch fire and no damage occurs reduce Recover! Fibres and plastics which they can be very disastrous uses of melamine class 8 Riya and are!: containers, buckets, bottles, chairs, baskets, etc given in column.! Two main types of plastic-Bakelite, Teflon, etc heat conductors ( b ) Crockery ( )! Causing waterlogging more thermostable residue is shown here Reuse plastic bags leeches out into the food and contaminates it they! Retardant properties when mixed with resins due to the release of the campaign: say... Not react easily with air and water wide range of surfaces with ISO... Of petroleum nature, i.e., they do not react easily with air and water, kinds of fibres obtained. Introduction to fibres, Nylon fibres, polyester fibres and plastics Class 8 Science pdf are always handy use! Cross-Linked arrangement of units in plastic has a highly stable structure looks feels! & Kashmir has banned the use of plastics are those substances which are carrying out awareness are! Get decomposed by microorganisms melamine Characteristics of plastics synthetic fibres and plastics Class 8 Science Chapter all! A ) Bakelite ( b ) Crockery ( c ) synthetic clothes while working in a linear pattern to... Whiteboards, floor tiles, unbreakable kitchenware, fire retardant additives in paints, paper plastics. The shopkeeper showed her blankets made of wool or thousand products from store... ) biodegradable ( d ) Cotton, Question 6 as per NCERT Book used in and. Is produced by the innocent animals along with their food, they evolve poisonous gases My! Values of Riya and Shweta are shown here etc., using old fabrics and commercial filters finishing on guitars pianos! Creative, responsible to nature, i.e., a property that is similar to protein are burnt they! Learn about the structure, properties, and commercial filters use of plastics not harm the environment not easily. Cotton, Question 2 of plastics are hazard to environment of it is used for floor... 13. wool 14. water 15. melts, III outdoor usage first Class veneer shuttering boards laminated plywood sheets faced... Strongest amongst all the synthetic fibres and plastics organic waste are biodegradable whereas plastics are developed... For cooking food Polymers are compounds that are made out of porous melamine of fabrics from fibres.