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प्रश्न
Explain the difference between thermoplastic and thermosetting plastics.
उत्तर
There are two types of plastics: Thermosetting plastics and Thermoplastics.
| Thermosetting plastic | Thermoplastic |
| Thermosetting plastic cannot be bent easily. It may break when forced to bend. | Thermoplastic can be bent easily. |
| Thermosetting plastic cannot be softened by heating. Thus, it cannot be reshaped once moulded. | Thermoplastic can be softened easily by heating. Thus, it can be reshaped. |
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संबंधित प्रश्न
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.
How the plastic is produced?
Write short note.
Uses of plastic.
Can you replace the following packaging material with those which can be recycled or reused.
Milk packets of polythene.
Can you replace the following packaging material with those which can be recycled or reused.
Dry eatables in polythene.
Explain why the following is made of thermosetting plastics?
Electric plugs/switches/plug boards
What are the drawbacks of plastics?
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.
Answer the following by rearranging the jumbled letters :
One-time use of plastics causes ______ damage.
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