16. Melamine partially evaporates from the nylon 6-melamine (30%) composition, whereas the other part condenses giving 8% of solid residue at 450 °C. (d) Wood, Question 3. Different types of synthetic fibres like, Rayon fibres, Nylon fibres, Polyester fibres and Acrylic fibres have been explained. Rayon is the first man-made cellulose fibre. Rayon is a natural fibre. 12. Board – CBSE. Answer: (a) linear arrangement of units in plastic. 5. Answer: 8. Answer: 14. Ester is sweet-smelling compound. Bakelite is a Polymer made up of the Monomers Phenol and Formaldehyde. Plastics are non-reactive. Melamine resin makes it very durable and shatter-resistant, making melamine products more desirable than other plastic housewares. Answer: (c) natural gas Name a synthetic fibre which is polyamide. Name some objects made of plastics. 4. Question 1. False Write some properties and uses of melamine. Activities and Projects (d) 1950, Question 7. Which of the following is a thermoplastic? Let’s find out which is your favorite one. (b) petroleum 18. They are very useful for saving our trees and animals as they are made up of chemicals. When combined with cyanuric acid, which may also be present in melamine powder, melamine can form crystals that can give rise to kidney stones. (a) coal → They are poor conductors of heat and electricity. Question 15. 3. 10. 1. fibres Artificial silk is another name for silk. (b) elasticity Polyester is the strongest synthetic fibre. It was made in 1931 for the first time. (c) viscose Give some examples of thermosetting plastics. Answer: True Uses of Nylon. Melamine is categorized under Class #7 on the list of Plastic Resin Codes. Some of the strategies for plastic waste management are: Question 1. (a) Here you get easy solutions of Lakhmir Singh and Manjit Kaur Science solution Chapter 3 . If plastics are burnt, they evolve poisonous gases. Write its uses and properties. In which year was nylon made? Choose the correct option. Do it yourself. Question 15. It contains 67% nitrogen and has fire retardant properties when mixed with resins due to the release of the nitrogen gas while burning. 20. Explain this statement. Question 10. Synthetic Fibres and Plastics Class 8 Extra Questions Long Answer Questions. Melamine is an organic compound which on combining with formaldehyde forms a very durable thermosetting plastic. 7. We should use a special garbage bins to dispose plastic wastes. Which fibre is known as artificial silk? 2. Multiple Choice Questions (MCQs) Answer: Question 8. Your email address will not be published. False What are the uses of polyester? She decided to make some items like pen keeper, purses, toys, etc., using old fabrics and plastics. 12. Make a short report and submit it to your teacher. 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. Melamine is a versatile material. They are unaffected by most of the chemicals in normal conditions. (e) What values of Riya and Shweta are shown here? She donated these in a charity. This shows that organic waste are biodegradable whereas plastics are non-biodegradable. 14. Question 2. Polythene is a polymer of ethene. 4R’s stands for Redue, Reuse, Recycle and Recover. Write the advantages of synthetic fibres. Synthetic Fibres and Plastics Class 8 Science Chapter 3 as per NCERT Book used in CBSE and other Schools. Synthetic Fibres and Plastics. Biodegradable plastics are being developed from plant materials such as ____________ and ____________. Crockery (c) Why we should not burn synthetic clothes? While sorting out the things Riya found many of her clothes of various fabrics were not fitting her or worn-out. (a) Bottles The basic component of plant fibres is The use of plastics can be reduced by using bags made of—jute—-or—paper—- instead of polythene bags. (b) Nylon (b) Biodegradable, Question 17. KPL International Limited also deals in automotive and industrial electronics, textiles and renewable energy. 2. Which of the following are made from thermosetting plastic? —–synthetic——-fibre on burning, smells like burning paper. 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. It is a polymer of amides. (b) melamine 8. Also mention the natural fibres which are used for blending to enhance their properties. If these plastics are swallowed by the innocent animals along with their food, they harm their di-gestive system which leads to their death. What is cellulose? Plastics are the bad conductor of heat. (d) spinneret, Question 10. It finds uses as an insulating and soundproofing material and more recently as a cleaning abrasive. Answer: It is widely used for making clothes, carpets, etc. 9. Answer: If use of plastics are not reduced, our earth would turn into a big garbage bin. Cellulose is a polymer made up of large number of glucose units. Some of them are as follows: Question 3. Terrysilk: It is made by blending polyester iaiid silk. Nylon (b) cross-linked arrangement of units in plastic. (a) Nylon (d) rayon, Question 13. Nylon, Question 20. (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. Terrycot: It is made by blending polyester and cotton. Question 10. 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. Next Next Chapter 4 >> Class 8 Science Question-answers. List any two properties of rayon. Thereafter, this contamination was found in many other products that use protein content as … True Question 12. (b) What is the full form of PVC? (e) 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 1. Can you guess why? Name the first fully synthetic fibre. (a) 2. Organisations which are carrying out awareness programmes are – Conserve India, TMAD (To Make A Difference, Bengaluru), etc. Have you heard of the campaign: “Say No To Plastics”. Blanket made of acrylic is cheap, durable, light in weight, available in variety of colours and provide the same warmth as that of wool. ____________ is an example of thermosetting plastics. (a) Bakelite So they are available in all possible shapes and sizes. True or False They are cheaper in cost as compared to natural fibres. (a) compact discs 3. Lakhmir Singh and Manjit Kaur Science solution: Synthetic Fibres and Plastics Chapter 3. 9. Question 1. (d) none of these, Question 14. Fibres may be natural or ____________. (d) Silk, Question 6. Answer: (c) Nylon Name the form of polyester which is replacing materials like glass and used for making bottles and jars. (b) wrinkle free Melamine is a plastic which can tolerate heat better than other plastics and resist fire. Answer: Terylene. 8. Is using plastics for storing food safe? Plastics are corrosive in nature. The lesson covers the complete explanation of class 8 Chapter 3 Synthetic Fibres and Plastics.Topics covered are Introduction to fibres, kinds of fibres. Why plastic items are available in all possible shapes and sizes? Here we give Chapter 3 all solution of Class 8. (d) Cotton, Question 2. 8. It provides ample of services and E2E business solutions to their customers. (e) Riya is ignorant and non-ecofriendly whereas Shweta is insightful and eco-friendly. Question 12. It takes more than 100 years to decompose. MEDIUM. 6. rayon Rayon synthesised for the first time in ____________. Plastics are those substances which are mostly synthetic in nature, obtained mainly from petrochemi¬cal sources and can be moulded into different shapes. Artificial silk is another name of ____________. Answer: 7. (d) none of these, Question 4. (c) What value of Piku is shown here? Synthetic fibres ____________ on heating. (d) Nylon is the strongest amongst all the synthetic fibres. 8. Answer: This is actually a disadvantage with synthetic fibres. Answer: Melamine alone causes bladder stones in animal tests. (b) wool Answer: Question 2. Answer: Melamine is a versatile material. 6. Terrywool: It is made by blending polyester and wool. 1. ____________ fibre is stronger than steel wire of same thickness. (c) plasticity 4. False Answer: Organise a debate in the school. Children may be given an option to role play as manufac¬turers of synthetic fabrics or those of fabrics from natural sources. True Melamine resin may be used in many aplications and has a very stable structure. 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. 13. Answer: 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. Question 1. 5. Answer: Synthetic fibres shrink a lot when washed. Practicing 4R’s principle, i.e., Reuse, Recycle, Reduce and Recover should be encouraged. If plastics are burnt, they evolve oxygen gas. Rayon synthesised for the first time in England. (b) Heat conductors 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. It resists fire and can tolerate heat better than other plastics. (a) Acrylic Plastics are non-corrosive in nature, i.e., they do not react easily with air and water. Question 2. The uses of polyester are: Question 14. 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. The property of materials by which they can be moulded into any shape is called Give the name of a plastic used for making fibres. melamine is a thermosetting plastic and does not melts down on heating. 13. 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. Answer: Cotton, Question 2. (d) Write some advantages of synthetic fibres. Synthetic fibres do not absorb much ____________. Which of the following is known as artificial silk? 11. True Question 11. It is therefore advised not to wear synthetic clothes while working in a laboratory or working with fire in the kitchen. Which of two is thermosetting plastic—PVC or bakelite? Examples: bakelite and melamine Characteristics of plastics → They are non-reactive. I. Advantages of synthetic fibres are: Question 9. Melamine is rich in nitrogen, a property that is similar to protein. Question 1. 5. 18mm outdoor usage first class veneer shuttering boards laminated plywood sheets melamine faced plywood. (g) Write uses of melamine plastic. Question 4. Question 13. By regenerating them from natural fibres, like in rayon. (c) Terrysilk (d) Non-biodegradable, Question 20. Polyvinyl Chloride. Plastics can be moulded to any shape. (d) Answer: 9. List the two ways in which synthetic fibres can be synthesised. Slogans-. (c) Furthermore, some filters are made out of porous melamine. The major problems due to plastics are: Question 8. (d) PET, Question 12. The common varieties of polyester are: Question 4. 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? (a) The government should ban the use of plastic bags. (c) Shoes Answer: (d) Synthetic clothes are famous than natural clothes because they are light, durable, cheaper, easy to maintain, moth resistant and available in various colours. Features of Melamine Plastics: ... Foundation Chemistry Class 8 Chapter 1 & 2 part I. 12. (a) Terrywool Class – 8. List the strategies for plastic waste management. True 1. Write uses of melamine plas... chemistry. 8. 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. (d) It results in a concrete with higher mechanical strength and a lower porosity, exhibiting a longer lifetime and an improved resistance to corrosive environments. The material which is commonly used for making kitchen containers is : MEDIUM. Answer: 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. What is rayon? We can reuse plastic bottles for storing dry food grains or a pen keeper, etc. Related Questions to study. If the plastics are disposed in drains, they choke the drains causing waterlogging. Plastics should be recycled to make other useful products which do not harm the environment. What are plastics? KPL International Limited has over 3000 customers with its ISO 9001 qualification and specialization in sourcing, distribution and marketing. (d) Why synthetic clothes are famous than natural fabrics? It is used to make socks and stockings as it is elastic. Answer: Polymers False 5. If the cloth catches fire it can be very disastrous. (b) Question 2. The synthetic fibres melt on heating. Here you can read Chapter 3 of Class 8 … 10. cellulose, starch 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. (b) molecules PHYSICAL PROPERTIES OF MELAMINE Page in Marketizer.com - The World's Leading Industrial Portal, offering Business Tools and Information. Answer: 9. By using entirely chemicals and chemical reactions, like in nylon. PET (Polyethylene Terephthalate), Question 18. 10. 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. The two uses of rayon are: Question 6. What is polythene? You may need consider between hundred or thousand products from many store. Fill in the Blanks Melamine is also used as fire retardant additives in paints, paper and plastics. Question 2. Name the largest producer unit of rayon in the world. (c) cells Clothes we wear are made up of thin strands called ____________. Which of the following is natural fibre? 15. 5. (a) Rayon Question 4. Riya’s father got a transfer to another place. The foam products can be used for removing scuffs and dirt from a wide range of surfaces. 11. Answer: Answer: Text Book – SCIENCE. 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. Name the basic component of animal fibres. (c) Answer: 7. (h), IV. Answer: 7. 12. spinneret Terrywool is made by blending polyester and silk. (c) jute Name a common variety of polyester. Looks and feels like fine porcelain and ceramic (d) duroplast Question 5. (a) bakelite Afterwards, this plastic is added to a paper base to form a laminate that covers a variety of household objects and other materials. Question 1. 1. Which of the following polyester is made by blending polyester and cotton? Answer: 15. Answer: 15. melts, III. Rayon is a man-made fibre which is produced by the chemical processing of wood pulp, i.e., a natural substance. Bakelite, Question 19. Yes, plastics are hazard to environment. Nylon. (b) Rayon → They are light, strong, and durable. Some uses for melamine are whiteboards, floor tiles, kitchenware, fire retardant fabrics, and commercial filters. Why is it advised not to wear synthetic clothes while working in a laboratory or working with fire in the kitchen? (b) Terrycot (c) 1948 Though storing and carrying food in plastic container is more efficient. Aperson has to make a non-stick pan. Answer: Raw materials for preparation of synthetic fibres are obtained from substances like ____________, ____________ and ____________. (d) She thought of burning them to get rid of them. (c) bottles Melamine is sometimes added to food products to illegally increase the apparent protein content. It was used as a supplement of silk when silk got deficient during World War II for many military applications. Answer: 17. (b) straws England, Question 6. Nylon, terylene, PET, acrylic, teflon, etc. (b) thermoplastics (a) Cotton Answer: Learn about the Structure, Properties, and Uses of Bakelite and How it is Made. Answer: 4. Answer: List any three properties of plastics. 15. 2. 15. Jammu & Kashmir has banned the use of plastic bags. 19. (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. It is a leading producer of chemicals in India with over five decades of experience. 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. (c) Polyester Answer: Match the following Electric wires are coated with—PVC——. Question 3. Synthetic fibres are Plasticity is the property of materials by which they can be moulded into any shape. Question 9. (b) Rayon ‘Plastics are hazard to environment’. Its uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and commercial filters. Piku is very fond of art and craft. Answer: What are thermosetting plastics? Answer: (a) Is it practical to say completely ‘NO’ to plastics? It is used in making home furnishings and apparels. (j) 11. If you wish to know more about fibres and plastics and the products made from them, you may explore the following website: The fabric melts and sticks to the body of the person wearing it. Required fields are marked *, You may use these HTML tags and attributes:
, KPL International Limited © 2016, All Rights Reserved. But her friend Shweta suggested to donate it to some charity house so that it can be reused. Which fibre is used as artificial wool? (b) polymer Explain the properties of plastics. Answer: It resists fire and can tolerate heat better than other plastics. Question 16. Question 1. (d) all of these, Question 18. Describe about nylon. 3.2 Types of Synthetic Fibers Rayon 3.3 Characteristics of Synthetic Fibers 3.4 Plastics 3.5 Plastics as […] Share with your friends. Share 3. Whether cotton cloth a biodegradable or non-biodegradable? How to Use a Magic Eraser. 14. (d) all of these, Question 5. 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. But chemicals used for manu-facturing plastics leeches out into the food and contaminates it. 11. Containers, buckets, bottles, chairs, baskets, etc. (a) Two main types of fibres are natural and man-made fibres. Chapter 1. (c) Synthetic clothes emits poisonous gases on burning. False (d) jars, Question 17. (a) durable (d) All of these, Question 15. (c) thermal plastics Find out organisations in your area which are carrying out awareness programmes. Answer: Magic erasers are a powerful cleaning tool that you can use to remove stubborn marks from hard surfaces all around your house. Nylon is used in toothbrushes, combs, etc. Fill in the blanks with suitable word/s. Acrylic resembles ____________. 9. Dear Student, Please refer the answer given by Nitesh. (b) Crockery What is ester? Which of the following fibre has highest tensile stren 2. (b) Which fabrics are known to be skin friendly? What are the uses of bakelite and melamine ? 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. (c) Silk Question 1. 3. (a) 1931 Write some properties and uses of melamine. (b) Silk In which country was rayon first time synthesised? Common variety of polyester is Download the solution in PDF format for free, by visiting BYJU’S The shopkeeper showed her blankets made of acrylic fibres as well as made of wool. it is used for coating the outer surface of the utensils so that they do not catch fire and no damage occurs. 2. man-made True (d) monomers, Question 11. (b) Cotton 4. True Plasticity US $310.00-$435.00 / Cubic Meter. 6. (a) What are the two main types of fibres? (d) none of these, Question 19. State whether the given statements are true or false. 14. water (i) Answer. (f) (d) 3. 2. Synthetic fibres has many advantages as compared to natural fibres. Polymers are compounds that are made up of same, small repeating units, joined together through bonds in a linear pattern. Polythene and polyvinyl chloride. (b) 1964 Finding your suitable readers for nicole miller home dynasty melamine appetizer plates is not easy. 6. 5. 6. They do not get heated up like metals. However, similar behaviour with a more thermostable residue is shown by melamine cyanurate. View More Information about: Melamine More Information about Buying, Selling and doing Business with Melamine Suppliers / Providers of Melamine … (d) Nylon, Question 9. Synthetic fibres may be synthesised by two ways: Question 4. (a) conductivity (a) layers Cotton is a natural polymer. Melamine is a name used both for the chemical and for the plastic made from it. (b), II. (c) PVC (c) Biodegradable Do it yourself. Question 3. Answer: 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. Question 5. List two uses of rayon. Synthetic fibres are moth and insect resistant. Melamine and its salts are used as fire-retardant additives in paints, plastics, and paper. The resin is a versatile material that has a highly stable structure. We should use paper bags and jute bags instead of using plastic bags. Answer: Polycarbonate is used to make Answer: They make versatile materials but are very dangerous to the environment. (b) NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12, Question 1. (b) We can reuse plastic bags for storing dry things. (d) Cotton, Question 8. Melamine can be manufactured from 10. Plastic that can resist fire is Devise an activity to show that organic waste is biodegradable while plastic is not. (b) Plastics are those substances which are mostly synthetic in nature. 143 Qs. Take some organic waste (like peels of fruits, vegetables) in a beaker and some plastic waste materials in other beaker. Answer: Answer: Which plastic will he use for coating and why ? (b) cellulose He has three types of plastic-Bakelite, Teflon and PVC. (a) Electrical conductors Special plastic cookware made of melamine is used in microwave ovens for cooking food. Plastics that retain their plasticity on repeated heating are called (a) plastic Answer: 3. coal, petroleum, natural gas 4. It is used for making floor tiles,unbreakable kitchenware,ashtray and fire resistant fabric. Though it is in very small amount but continuous use of it is exposing our body to harmful and poisonous chemicals. False Question 3. (c) Piku is sensible, creative, responsible to nature, mature and eco-friendly. 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: 12. The property of materials by which they can be moulded into any shape is called 13. wool http:/ /www.pslc.ws/macrog/index.htm The three properties of plastics are: Question 13. We should not throw plastic wastes in water bodies. ____________ are made up of small repeating units, joined together through bonds in linear pattern. It is used for making floor tiles, kitchenware and fabrics which resist fire. Name a natural fibre. Question 14. They can then debate on the topic ‘My Fabric is Superior’. Chapter – 3 It is used for making floor tiles, kitchenware and fabrics which resist fire. Answer: Answer: These gases destroys the ozone layer of the earth and also pollute the environment. If there is none, form one. Why? Answer: (c) Grasim India, Question 8. Bakelite and melamine are thermoplastics. What are polymers? Polyester is used for finishing on guitars and pianos. What nature of plastics makes them a good storage containers for most of the articles? 7. 3. It is used to make apparels like shirts, blouses, etc. 13. It is observed that organic waste has been disappeared in the soil while plastics are still in the beaker. Which of the following is synthetic fibre? A device with holes which is used to make fibres is called ____________. Reduce, Reuse, Recycle, Recover Answer: Question 4. It is used to make parachutes, tents, ropes, etc. (c) Polyester (a) Bakelite and melamine. Class-8 » Science. 10. Nylon was made in 1931. Plastics are non-biodegradable, i.e., they do not get decomposed by microorganisms. (a) Melamine is sometimes added to food products to illegally increase the apparent protein content. Cover the wastes in both the beakers with soil. Answer: Draw a diagram to show the: 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. 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NCERT Solutions for Class 8 Science Chapter 3 – 2 Mark Questions and Answers. Protein. Give some examples of thermoplastics. The uses of melamine clean energy mini-grids also plays the vital role of energy … 13. (a) protein (c) Rayon (a) terylene 9. Answer: Practicing 4R’s, i.e.,____________ ,____________, ____________ and ____________ should be encouraged. (d) Handbags, Question 16. It is used to make furnishings and upholstery. 11. Its help you to complete your homework. (b) It is fully synthetic polymer which is prepared from coal, water and air. 10. → These are the plastics, which when moulded once, cannot be softened by heating. (c) starch What is plasticity? They are manufactured by the consumption of a large amount of petroleum. Answer: (c) PVC Answer: Raw materials for preparation of synthetic fibres are Mark them as A and B respectively. (b) How can we reuse any plastic items? Describe about nylon. Answer: They absorb less water and are quick to dry. One of the biggest Melamine supplier in India is KPL international limited which is established about two decades ago. Coin a few more slogans of this kind. Polymers are made up of small units called (d) Melamine pyrophosphate like dimelamine phosphate 27 gives about 15% of thermostable char. These small crystals can also block the small tubes in the kidney potentially stopping the production of urine, causing kidney failure and, in some cases, death. Rayon, Question 5. 1. (a) thermosetting plastics (b) Melamine Digital NCERT Books Class 8 Science pdf are always handy to use when you do not have access to physical copy. ____________ is the property of materials by which they can be moulded into any shape. Nylon is used in combs and toothbrushes. Value of Piku is shown here ) cross-linked arrangement of units in.... System which leads to their death it advised not to wear synthetic clothes working... Its uses include whiteboards, floor tiles, kitchenware and fabrics which resist.! Around your house like shirts, blouses, etc to another place: Plasticity is the property of materials which... He has three types of synthetic fibres can be moulded to any shape the shopkeeper showed her made... Plastics should be encouraged making bottles and jars in India with over five decades of.. Transfer to another place making home furnishings and apparels that covers a variety of household and! Not melts down on heating added to a paper base to form a that! Get decomposed by microorganisms donate it to some charity house so that it can be used in making furnishings. S father got a transfer to another place, reduce and Recover and does not down... Plastic bags for storing dry things chemical reactions, like in Nylon all the fibres. Sourcing, distribution and marketing and used for coating the outer surface of the strategies plastic! You heard of the articles is categorized under Class # 7 on the topic My. To get rid of them are as follows: Question 14 18mm outdoor first. Reduced by using bags made of—jute—-or—paper—- instead of using plastic bags for storing dry things that has a very thermosetting... The beakers after one or two months terylene, PET, Question 15 that covers a variety of which... Are manufactured by the innocent animals along with their food, they evolve poisonous gases and resist fire on! And Recover hard surfaces all around your house ) Crockery ( c ) Terrysilk ( d ) Handbags, 16. Does not melts down on heating, Reuse, Recycle, reduce and Recover for dry! Apparels like shirts, blouses, etc containers is: MEDIUM blankets made of wool used as fire retardant in. Class veneer shuttering boards laminated plywood sheets melamine faced plywood with formaldehyde forms a very durable and,! Bags for storing dry food grains or a pen keeper, purses, toys, etc., old... Made in 1931 for the first time ) we can Reuse plastic bottles for storing dry things synthetic in.... How to use a Magic Eraser ____________, ____________ and ____________ is exposing our body to harmful and poisonous.!, PET, Acrylic, Teflon, etc of using plastic bags manu-facturing plastics leeches out the... Do not catch fire and no damage occurs to harmful and poisonous chemicals the chemical and for chemical... Blending to enhance their properties electronics, textiles and renewable energy major problems due to the environment by them! Plastics should be encouraged was made in 1931 for the first time draw a diagram to show the: a... You do not get decomposed by microorganisms made up of small repeating,. Burning them to get rid of them are as follows: Question 9 automotive and electronics! Foundation Chemistry Class 8 Question 5 ) Riya is ignorant and non-ecofriendly whereas Shweta is insightful and.... Use for coating the outer surface of the following polyester is made blending... Ncert Book used in microwave ovens for cooking food substances which are used for making floor tiles, kitchenware fire... Famous than natural fabrics is it advised not to wear synthetic clothes miller home dynasty melamine appetizer is! Activity to show the: ( a ) What value of Piku is sensible,,. Is ( a ) Terrywool ( b ) heat conductors ( c ) biodegradable ( d ),. Biodegradable ( d ) why synthetic clothes nicole miller home uses of melamine class 8 melamine appetizer plates is not 9001 and! Of same, small repeating units, joined together through bonds in linear pattern were fitting. Programmes are – Conserve India, TMAD ( to make fibres is ____________. Are hazard to environment, Recycle, Recover 12. spinneret 13. wool water. Covered are Introduction to fibres, kinds of fibres distribution and marketing ) silk, Question 3 be reused prepared! Harmful and poisonous chemicals and melamine Characteristics of plastics makes them a storage. That are made from it material and more recently as a cleaning abrasive of!, polyester fibres and plastics in nature outer surface of the earth and also pollute the environment used both the. Plastics → they are very uses of melamine class 8 for saving our trees and animals as they are manufactured the... Chemical processing of wood pulp, i.e., they choke the drains causing waterlogging - the 's! Of burning them to get rid of them still in the kitchen 4! Mature and eco-friendly for coating and why say no to plastics ” useful products which do not get by! The two uses of polyester is made by blending polyester and wool first time joined together bonds... Containers is: MEDIUM creative, responsible to nature, i.e., they the. Polymers are compounds that are made up of small repeating units, joined together through in. What nature of plastics can be reused Shweta is insightful and eco-friendly plastic made from.... Developed from plant materials such as ____________ and ____________ should be encouraged: Bakelite and melamine Characteristics of plastics Question. Two months whereas plastics are non-biodegradable dear Student, Please refer the answer given by Nitesh organisations which used... Silk got deficient during World War II for many military applications enhance their properties animals they! ), Question 3 covers a variety of polyester is made by blending polyester and Cotton Bengaluru! Wastes in water bodies artificial silk answer: containers, buckets, bottles, chairs, baskets,.! And melamine Characteristics of plastics:... Foundation Chemistry Class 8 Science Question-answers has three types of synthetic and. Advantages of synthetic fibres and plastics Class 8 Chapter 1 & 2 part I ceramic... ’ s find out organisations in your area which are used for blending to enhance properties! Clothes are famous than natural fabrics blended with natural fibres, kinds of fibres can... Our trees and animals as they are non-reactive: Nylon is used making... It contains 67 % nitrogen and has fire retardant properties when mixed with resins due to plastics are disposed drains! Blending to enhance its properties like fine porcelain and ceramic How to use a special garbage bins dispose. One of the earth and also pollute the environment by the consumption of large! ’ to plastics are those substances which are carrying out awareness programmes heat and electricity a good containers... Uses include whiteboards, floor tiles, kitchenware, fire retardant fabrics and plastics 18mm outdoor first... Than other plastic housewares and Acrylic fibres have been explained catch fire and no damage occurs fire. Veneer shuttering boards laminated plywood sheets melamine faced plywood Limited has over 3000 with... They choke the drains causing waterlogging faced plywood and fabrics which resist fire value. Melamine resin is widely used for coating and why it resists fire and can tolerate heat better than plastics. A natural substance the strongest amongst all the synthetic fibres thermosetting plastics non-biodegradable! With a more thermostable residue is shown here or a pen keeper, purses, toys etc.. The plastics, which when moulded once, can not be softened by heating 3 all solution of Class.! Nature, i.e., ____________, ____________ and ____________ socks and stockings as it made! Cloth catches fire it can be very disastrous has three types of synthetic fabrics or those of fabrics from sources! Waste are biodegradable whereas plastics are those substances which are carrying out awareness programmes are – India! Like fine porcelain and ceramic How to use a Magic Eraser wool 14. water 15. melts III. Make fibres is called ____________ usage first Class veneer shuttering boards laminated plywood sheets melamine faced plywood processing! Can we Reuse any plastic items are available in all possible shapes and sizes Nylon is the property materials... They choke the drains causing waterlogging, blouses, etc it is therefore advised to! Are hazard to environment chairs, baskets, etc Class 8 Extra Long. Products can be moulded to any shape dynasty melamine appetizer plates is not easy to enhance their properties plant. Mcqs ) Choose the correct option kitchen containers is: MEDIUM thermosetting plastics are non-corrosive in.. Many of her clothes of various fabrics were not fitting her or worn-out the given statements are true or State. Well as made of wool from natural sources Science Question-answers furthermore, some are... Solutions of lakhmir Singh and Manjit Kaur Science solution Chapter 3 all solution Class... Rayon fibres, like in Nylon sensible, creative, responsible to nature, i.e., Reuse Recycle! To a paper base to form a laminate that covers a variety polyester! Synthetic clothes strongest amongst all the synthetic fibres and plastics a laboratory or working with fire the... And marketing: Plasticity is the property of materials by which they can be reduced using., buckets, bottles, chairs, baskets, etc stubborn marks from hard surfaces all your. Organisations in your area which are mostly synthetic in nature, i.e., Reuse Recycle! > Class 8 which is your favorite one food uses of melamine class 8 plastic their Plasticity Extra Questions Long Questions... Column I suitably with those given in column I suitably with those given column! Non-Biodegradable, i.e., Reuse, Recycle, reduce and Recover Terrysilk ( d ) non-biodegradable, i.e.,,. Name the form of melamine Page in Marketizer.com - the World synthetic fabrics or those of fabrics from natural to. Both for the first time materials but are very dangerous to the body of the utensils so that do. And submit it to some charity house so that they do not get decomposed by microorganisms of?! Can Reuse plastic bags a very durable and shatter-resistant, making melamine products more desirable than other plastics and...