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प्रश्न
Write short note.
Uses of plastic.
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
Describe an activity to show that thermoplastic is a poor conductor of electricity.
Plastic shows ______ property, hence it can be moulded to any shape.
Write the natural or manmade raw material of the following items.
Mattress, glass vessel, bangle, chair, gunny bag, broom, knife, pen.
Distinguish between.
Man made material and natural material.
Write short note.
Glass production.
Can you replace the following packaging material with those which can be recycled or reused.
Dry eatables in polythene.
Unscramble the jumbled words given below, related to synthetic material.
Laspict
Edmund Alexander Parkes was the creator of the first plastic called ______.
What are the drawbacks of plastics?
Answer the following by rearranging the jumbled letters :
One-time use plastics are also known as ______ plastics.
áwyrhotwa
