In: Chemistry
Which of the following is not a natural polymer?
a) Rayon
b) Starch
c) Cellulose
d) RNA
Answer : a) Rayon
Explanation :
The polymers which are obtained from plants and animals are called a natural polymers.
Rayon is a semi-synthetic polymer which is derived from a natural polymer by chemical modification. Cellulose on acetylation with acetic anhydride in sulphuric acid gives cellulose acetate polymer or rayon.
Remaining all are naturally obtained polymer.
a) Rayon