Question

10. Natural rubber is not used in making footwear for polar regions because

1) Natural rubber becomes soft at temperature lower than 10°C.
2) Natural rubber becomes brittle at temperature lower than 10°C
3) Natural rubber melts at temperature lower than 10°C.
4)Natural rubber becomes stronger at temperature lower than 10°C.​

Answer 1

Answer:

Natural rubber is a linear polymer of isoprene (2-methyl-1, 3-butadiene) . It becomes soft at high temperature (335K) and brittle at low temperatue (<283), so it is not used in making footwear for polar regions.

Answer 2

Answer:

Natural rubber is a linear polymer of isoprene (2-methyl-1, 3-butadiene) . It becomes soft at high temperature (335K) and brittle at low temperatue (<283), so it is not used in making footwear for polar regions.