All Rights Reserved. Answer: d Explaination: (d) LDP is used for making squeeze bottles, flexible hose pipe. One way to explain the difference between thermoplastic and thermosetting polymers, is to consider an omelet. 1 kgf/cm 2 (gage) and 70°C. Can you write the major difference between these two types of plastics? Q1. Thermosetting. Bakelite is a phenol formaldehyde resin. Whereas, polythene is a thermoplastic polymer i.e. Thermoset material properties: You can not melt. LDPE - Low Density Polythene is tough and flexible. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. _____ is a thermosetting plastic. C. Both (a) and (b) D. None of these. Answer/Explanation. Who is the longest reigning WWE Champion of all time? crystalline regions together with elastic amorphous regions. plastics may be recycled that means may be moulded into another A thermosetting plastic is a polymer that irreversibly becomes rigid when heated. Polyethylene or polythene is the most common plastic in use today. Thermosetting polymers are made from various kinds of material that serve key roles and importance in the plastics fabrication industry. Plastics are a wide range of synthetic or semi-synthetic materials, that usually use a polymers as a main ingredient. a) PVC b) Polythene c) Bakelite d) Polystyrene. Answered By . The rubber to make car tires is made out of a thermosetting polymer. Thermosetting polymers are those which are able to be cured at high temperature into a material that no longer melts because chemical cross-links have been made between adjacent molecules. Answer. Polyethylene (PE) is the most widely used thermoplastic polymer for fabricated parts and components. Polycot, Polywool, Terrycot ,Acrylic State whether the given statements are true or false. What does contingent mean in real estate? Examples of thermoplastics include polythene (PE), polypropylene ... Thermosetting plastic properties: Thermosetting plastic molecules, on the other hand, form permanent chemical bonds or cross links with each other once heated. Polyethylene; Poly Vinyl Chloride(PVC) Teflon; 3.2. High-density polyethylene or polyethylene high-density is a thermoplastic polymer produced from the monomer ethylene. Polyethylene, polypropylene, … Machine parts, bowls and crates are generally made from high density polystyrene. Which of the following is not a natural polymer ? Varnish does not contain The line of action of the buoyant force passes through the centre of gravity of the Radioactive decay follows _____ order kinetics. The use of plastics can be reduced by using bags made of —jute—- or— paper —- instead of … Polythene (or polyethylene, or PET) is ideal for use in plastic bottles. What are the release dates for The Wonder Pets - 2006 Save the Ladybug? 1. Examples of thermoplastics include acetal, acrylic, cellulose acetate, polyethylene, polystyrene, vinyl, and nylon. Plastic films are used in a wide variety of applications. The plasticity during production makes it possible for plastic to be moulded, extruded or pressed into solid objects of various shapes, making them an adaptable material for many different uses. It is formed by the addition of polymerization. Understand the Key Differences Between Thermoplastic and Thermosetting Plastic with detailed explanations and examples. _____ is a thermosetting plastic. Heat provides energy for chemical reactions that increase the cross-linking Some common examples are bakelite, urea-formaldelyde resins, etc. a) Polythene b) Epoxy polymer c) P.V.C. What are Thermoset Plastics? Previous question Next question. If you own a recently manufactured aquarium or terrarium, it’s likely made of acrylic plastic. Thermosetting Plastics or Thermoset Plastics: By heating the polymer, if it turns hard, then it is called as Thermosetting plastic material. What is a sample Christmas party welcome address? Polyethylene (PE), despite having the simplest basic structure of any polymer (a repetition of CH 2 units), is the largest tonnage plastics material. Answer . Fishing nets are made from— nylon —. Answer: (d) 4. What is a sample Christmas party welcome address? 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 fuel tanks. Thermosetting plastics: Polythene and Polyvinyl Chloride. Thermoplastics become less viscous or melt when heated. Is polythene a thermosetting or a thermoforming plastic? Bakelite is resistant to heat and chemical actions and also it is non-flammable. once they are moulded and harden on cooling, they cannot be softened again. All Rights Reserved. Thermosetting Plastic is formed by condensation polymerization. Examples include: Polyester/fibreglass systems (a) Melamine (b) Polythene (c) PVC (d) Nylon. Most thermoplastics have a high molecular weight.The polymer chains associate by intermolecular forces, which weaken rapidly with increased temperature, yielding a viscous liquid. Question is ⇒ _____ is a thermosetting plastic., Options are ⇒ (A) PVC, (B) Polythene, (C) Bakelite, (D) polystyrene, (E) , Leave your comments or Download question paper. The terms thermoplastic and thermoset stand for how a material is or can be processed under a changed temperature [1]. Thermoplastic recycling. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. Signs: a notice, warning, or advertisement, that is displayed for public view. The material similar to silk in appearance is (a) Nylon (c) Polyester (b) Rayon (d) Terylene 6. d) Polystyrene. Plastic is a very generalized term for polymers that can mean either a thermosetting or a thermoplastic Plastic. What are some samples of opening remarks for a Christmas party? Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. Thermosetting plastics do not melt when heated. Composite thermoset materials consist of a matrix and a … Bakelite is a- synthetic polymer — plastic. Hence, option A is correct. THERMOPLASTICS 3 HDPE - High Density Polythene which is rigid and hard. Plastic is a very generalized term for polymers that can mean either a thermosetting or a thermoplastic Plastic. (a) Melamine (b) Polythene (c) PVC (d) Nylon. It is hazardous to the environment which is more when compared to the thermoplastic and less than the rubber. These cannot be reused. They tend to char and burn when heated, but they are resistant to much higher temperatures than thermosoftening plastics. Which of the following characteristics does not affect the properties of plastics? They are insoluble. b) Plastic bag, … Thermoplastic and thermosetting plastics Plastics can be subdivided into two large categories: thermoplastic and thermosetting. Planck\'s distribution law is valid for _____ bodies. PEX is a medium- to high-density polyethylene containing cross-link bonds introduced into the polymer structure, changing the thermoplastic into a thermoset. Plastic bags, stretch films because of its clear and crystalline nature is how they respond to high.. ) Teflon ; 3.2 hard when cooled we have provided synthetic Fibres and plastics Answers... Some common examples are bakelite, urea-formaldelyde resins, etc ) thermoplastics c ) PVC b thermoplastics! ) plastic bag, … type of plastic containing cross-link bonds introduced into polymer... Thread is actually weaker than a steel wire polyethylene is a thermosetting plastic which is rigid and when. 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