Q. Which of the following statements is not true?
A) Natural silk is a protein
B) PDI for natural polymers is greater than one
C) Polyurethane foams are used for making pillows
D) HDPE is prepared by Ziegler-Natta polymerisation
Explanation
(b)
PDI and for natural polymers is one
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.