Question

1.List the difference between Thermoplastics and thermosetting plastics, giving few examples.
2.Bakelite is used in making handles of pan. Explain with reference to its properties.
3.Which type of plastic do you think is more ecofriendly –Thermoplastic or thermosetting plastic. Justify your answer on the basis of its physical and chemical properties.
4.Manufacturing synthetic fibers is actually helping conservation of forests. Justify the statement with evidence.

Answer 1

Explanation:

Ncert solutions

Grade 8

Mathematics

Science

Chapters in NCERT Solutions - Science , Class 8

Exercises in Synthetic Fibres and Plastic

Question 6

Q6) Explain the difference between thermoplastic and thermosetting plastics.

Solution

Transcript

Solution:

Thermoplastic plastics Thermosetting plastics

1. Thermoplastic can be easily bent. 1. Thermosetting plastics cannot be easily bent. If forced to bend, they will break.

2. Softens on heating 2. Do not soften on heating

3. Can be moulded and reshaped 3. Cannot be moulded and reshaped.

4. Expensive 4. Cheaper

5. Recyclable 5. Not recyclable

6. Soft and weak 6. Hard and strong

7. It is used in making toys,combs and various containers. 7. It is used in making handles of cooking utensils.

8. Example: Polythene and PVC 8. Example: bakelite and melamine