Which one of the following is a natural rubber?
A. Buna-S
B. Buna-N
C. cis – 1, 4 – poly isoprene
D. neoprene
Answer:C
Which one of the following is a natural rubber?
A. Buna-S B. Buna-N C. cis – 1, 4 – poly isoprene D. neoprene