JEE Main Chemistry question

Not in JEE Main or NEET syllabus

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

(A)Natural rubber becomes soft at temperature lower than .
(B)Natural rubber becomes brittle at temperature lower than .Correct
(C)Natural rubber melts at temperature lower than .
(D)Natural rubber becomes stronger at temperature lower than .

Answer: (B)

Solution

Natural rubber becomes soft and tacky above about 335 K and brittle below about 283 K (roughly ), so it is unsuitable for footwear in very cold (polar) climates since it loses its

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Question ID VK-151361