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प्रश्न
Write short note.
Uses of plastic.
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उत्तर
- 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.
संबंधित प्रश्न
Write uses of PVC.
Distinguish between.
Man made material and natural material.
Which measures will you arrange to minimize the environmental problems arising due to non-degradable plastic?
Can you replace the following packaging material with those which can be recycled or reused.
Glass tumblers packed in thermocol box.
True or False
A lot of plastic pollutes our environment.
Why is it better to avoid the use of plastic products?
Look at the following picture and explain what is happening.
PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Can you write the major difference between these two types of plastics?
Most one-time-use plates are made from ______.
Answer the following by rearranging the jumbled letters :
One-time use plastics are also known as ______ plastics.
áwyrhotwa
