science
Grade-5
Easy
Question
When hot water is placed into an empty plastic water bottle, the water bottle keeps its shape and does not soften. What type of plastic is the water bottle made from?
- Thermoplastics
- PVC
- Thermosetting plastics
- Polypropene
Hint:
Some plastics are rigid and durable against heat.
The correct answer is: Thermosetting plastics
- Thermoset plastics heated once to a shape cannot be re-moulded and are rigid in nature.
- They can withstand high temperatures.
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