Phenol, any of a family of organic compounds characterized by a hydroxyl group attached to a carbon atom that is part of an aromatic ring. (ii) Also used in production of billia The reaction involved is condensation reaction in the presence of either a basic or acidic catalyst. (a) Terylene (b) Bakelite (c) Melamine (d) Nylon-6,6, Mention two important uses of each of the following: (i) Bakelite (ii) Nylon-6. Use some common sense: If you are in doubt about a piece, ask the dealer specific questions. Bakelite is an acrylic. APC Books 1002, Faiz … Bakelite requires two monomers- phenol and formaldehyde. Veteran collectors know the uniquely identifiable “clunk” sound that two pieces of vintage Bakelite make when tapped together. Raw materials used in the preparation of bakelite are :-phenol and formaldehyde. Tablet tooling In Tablet tooling Bakelite relief and Tapered dies are two important inventions which are used to remove the Tablet compression problems . A. the function which the object would serve B. the ease with which the resin could fill the mould C. the facility with which the object could be removed from the mould D. the limitations of the materials used to manufacture the mould It is used for making carpets and fabrics in textile industry. Mark Miodownik describes the work of the chemist Leo Baekeland, who invented the plastic Bakelite. The Achilles heel was color. The Rolex GMT-Master 6542 had a relatively short production period, and furthermore, Rolex also replaced the bezels of some GMT-Masters. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. Later, as the versatility of Bakelite was explored, a variety of products were manufactured. It is used for making carpets and fabrics in textile industry. Bakelite is the first synthetic plastic and is known as a “material of thousand uses” due to its versatile applications. The Bakelite Corporation adopted as its logo the mathematical symbol for infinity and the slogan, "The Material of a Thousand Uses," but they recognized no boundaries for their material. They used Bakelite exclusively for the brown and black housings. Promotional item for bandleader Paul Whitman"s radio show in the 1930s. It is used widely in making electrical goods such as switches, plugs, handles of various utensils. It is an example of thermosetting resin of phenol and formaldehyde. Uses of Bakelite : (i) It is used for making electrical switches and plugs. Leo Hendrik Arthur Baekeland FRSE(Hon) (November 14, 1863 – February 23, 1944) was a Belgian chemist.He is best known for the inventions of Velox photographic paper in 1893, and Bakelite in 1907. Bakelite is a man-made (synthetic) material while Melamine occurs naturally (is organic). Mention two important uses of each of the following : (i) Bakelite (ii) Nylon 6 (Delhi 2011) Answer: (i) Bakelite : (i) It is used in making handles of utensils. He has been called "The Father of the Plastics Industry": 13 for his invention of Bakelite, an inexpensive, nonflammable and versatile plastic, which marked the beginning of the modern plastics industry. (ii) It is also used for making parachutes. It was also used in other diverse products such as jewellery, kitchenware, and toys. It’s not rare, especially online, for people to try and sell newly made, cheap fakes as old and classic jewelry pieces. Brightly colored vintage Bakelite was used for many items other than jewelry. It is used widely in making electrical goods such as switches, plugs, handles of various utensils. When it came to making color products they resorted to Catalin and called it such, but it was expensive and the telephone industry mostly waited for cellulose acetate development for easily colored material and for cheaper products. Some collectors avidly seek marbling containing more than two colors, and those are indeed harder to find. Different substitutes of phenol and formaldehyde can also be used depending on the application. Bakelite has a high resistance to heat and chemicals and also has a low electrical conductivity due to which it is most commonly used for making electrical switches Bakelite is also used to make the handles of a variety of utensils. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. It is one of the most important and extensively used polymers for making components and parts of various items. The Bakelite telephone initiated a closer collaboration between the Telegrafverket, precursor to today’s Swedish Telecom, and Ericsson. Due to its excellent insulating properties it is used for making switches and other electrical appliances. Bakelite is the common name for phenolic resin, which was one of the first mass-produced plastics. Mention two important uses for each of the following polymers: (i) Bakelite (ii) Nylon 6,6 (iii) PVC Bakelite Pyramid phones from 1930's . More importantly, Catalin was transparent allowing the use of color or mixture of colors during the manufacturing process. Read the passage below and answer. 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