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Question
Write short note.
Uses of plastic.
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Solution
- Melamine is used in domestically useful items like cup, saucers, plates, trey, spare parts of airplane engine and sound insulating coverings etc.
- Polyurethane is used in surfing boards, small boats, furniture, seats in vehicles etc.
- Bakelite is used for making cabinets of radio, T.V., telephones, electric switches, toys, coverings over handles of cookers etc.
- Polyester is used for making fiberglass, toners of laser printers, textile industry etc.
- Polypropylene is used for making parts of loudspeakers & vehicles, ropes, mattresses, laboratory appliances etc.
- Polyethene is used for making milk bags, packing bags, flexible garden pipes etc.
- Polystyrene is used for making thermo-insulating parts of electric appliances like refrigerators, gears of the machine, toys, protective coverings like covers of CD and DVD etc.
- Polyvinyl chloride is used for making bottles, raincoat, pipes, handbags, shoes, electric cable insulation, furniture, ropes, toys etc.
RELATED QUESTIONS
Fill in the blanks with appropriate words.
Like synthetic fibres, plastic is also a _______
Explain why the following is made of thermosetting plastics.
Saucepan handles
Plastic shows ______ property, hence it can be moulded to any shape.
Why is it better to avoid the use of plastic products?
A plastic bag dumped in the soil stays without breaking down for 500 years. If a new generation starts in every 30 years, how many generations would it take to see the plastic bag finally broken down?
Plastic articles are available in all possible shapes and sizes. Can you tell why?
Plastics have completely occupied our life. Why?
Most one-time-use plates are made from ______.
Polycarbonate (PC) plastic contains ______.
Assertion (A): PVC is an unsafe plastic.
Reason (R): Burning PVC releases dioxins, a most toxic chemical.
