MEDIUMMCQ SINGLEJEE Advanced ChemistryOrganic ChemistryPolymersPrevious Year Questions
Natural rubber is not used in making footwears for polar regions because (Guj. CET 2011)
A.natural rubber becomes soft at temperature lower
B.natural rubber becomes brittle at temperature lower✓ Correct
C.natural rubber melts at temperature lower than
D.natural rubber becomes stronger at temperature
Explanation
Natural rubber becomes soft at high temperatures (>335 K) and brittle at low temperatures(<283 K). Hence, it is not used in making footwears for polar regions.