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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
Fill in the blanks with appropriate words.
Like synthetic fibres, plastic is also a _______
Who is my partner?
| 'A' column | 'B' column |
| a. Lead glass | i. Plates |
| b. Bakelite | ii. Mattresses |
| c. Thermocol | iii. Electric bulb |
| d. Optic glass | iv. Electric switch |
| e. Polypropylene | v. Lens |
Write uses of PVC.
Write the natural or manmade raw material of the following items.
Mattress, glass vessel, bangle, chair, gunny bag, broom, knife, pen.
Can you replace the following packaging material with those which can be recycled or reused.
Milk packets of polythene.
Look at the following picture and explain what is happening.
Plastics are environment friendly.
Mention a few household products in which microbeads can be found.
A survey showed that one-time-use plastic items were among the top 10 plastic items found in garbage washed up from oceans. Can this be true? Explain how.
Most one-time-use plates are made from ______.
