Advantages of natural and synthetic polymer
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Advantages of synthetic polymer :
Briefly, you can design synthetic polymers for specific uses. For example, natural rubber is prone to degrade in the presence of oxygen, ozone and light, although additives can improve the situation. So you need to look at other polymers for some applications, and they will usually be synthetic. Similarly, NR is also prone to swelling in paraffinic oils, so one would use a nitrile rubber where exposure was likely to be a problem. If you factor in wear resistance and temperature concerns, you can likewise use a synthetic polymer that has been designed for the job.
Advantages of natural polymer :
Natural polymers are readily and abundantly available .They are comparatively inexpensive . Products of natural polymers are non-toxic .They can be modified to get semi-synthetic forms.
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- NATURAL POLYMER
⇒ Polymers found in nature are known as natural polymers.
⇒They are formed by plants and animals.
- SYNTHETIC POLYMER
⇒ Polymers made by human beings are known as synthetic polymers.
⇒ Among the all option plastic is not a natural polymer because Cellulose, Rubber and Silk are found in nature whereas Plastic is not.
⇒ So the correct option will be 3 which is "Plastic"