Question

D. Tick() the correct answer.
1. Which of the following is made from natural raw material?
a. nylon
b rayon
c. polyester
2. Which of the following is a cross-linked polymer?
a. melamine b. polythene c . PVC
3. Which of the following will not melt on heating?
a. nylon
b. polythene
c. PVC
4. Soles of shoes are made from:
a. PET
b. PVC
teflon
5. Which of the following is a biodegradable polymer?
A. PHBV
b. PVC
c. Polyester
​

Answer 1

1. Rayon is made from natural raw material.
2. PVC is a cross linked polymer.
3. PVC will not melt on heating.
4. Soles of shoes are made from PET.
5. PHBV is a biodegradable polymer .

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Answer 2

Answer:

Explanation:1-NYLON, 2-pollithene, 3-pvc, 4-pvc, 5-

The common examples of aliphatic biodegradable polymers are polyglycolic acid(PGA), Polyhydroxy butyrate (PHB), Polyhydroxy butyrates-co-beta hydroxyl valerate( PHBV), Polycaprolactone(pcl), Nylon-2-nylon-6.