9. Which of the following groups contain all man-made substances?
a. Rayon, Terylene, Silk
b. Jute, Polycot, Acrylic
c. PVC, Polyester, Melamine
d. Acrylic, Cotton, Wool
Answers
Answered by
2
Answer:
PVC, polyester melamine....... option C
Answered by
2
Answer:
Option (c) could be man-made substances
c. PVC, Polyester, Melamine
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