A. Water impermeable cellophane
B. Polythene
C. Cellulose acetate
D. Teflon
Correct Answer: Polythene ✔
Last Updated: March 08, 2019
A. Water impermeable cellophane
B. Polythene
C. Cellulose acetate
D. Teflon
Correct Answer: Polythene ✔
Last Updated: March 08, 2019