10. Which of the following statements regarding thermoplastics and thermosetting plastics is incorrect? *
1 point
1 Bakelite is a thermoplastic
2PVC is an example of thermoplastics.
3Thermoplastics can be moulded again and again
4Thermosetting plastics cannot be moulded again and again
Which one is correct
Answers
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Option (1) Bakelite is a thermoplastic is incorrect among the given options.
Explanation:
- Plastics are divided into two categories. They are thermoplastics and thermosetting plastics.
- Bakelite comes under the division of thermosetting plastics, which are made up of formaldehyde and monomer phenol.
- Plastics are either thermosetting or thermoplastic.
- Polyvinyl chloride (PVC) is a thermoplastic.
- Because of their unique chemical properties, these thermoplastics can be molded above a specific temperature and then return to a solid phase when cooled.
- On the contrary, thermosetting plastics cannot be reshaped or recycled because once heated they form strong covalent bonds and cross-links between its molecules.
Answered by
1
In the following statements regarding thermoplastics and thermosetting plastics, bakelite is a thermoplastic is incorrect.
Explanation:
- Bakelite is an early form of brittle plastic manufactured from formaldehyde and phenol that was primarily utilized for electrical equipment and was typically dark brown in color.
- Bakelite is useful in automobile components and industrial applications because of its strong resistance to electricity and heat.
- Even without using testing methods, Bakelite in solid colors is the most recognized variety.
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