JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which of the following is not a thermoset?

(A)Glyptal
(B)Bakelite
(C)Melamine-formaldehyde polymer
(D)Styrene-butadiene rubberCorrect

Answer: (D)

Solution

Glyptal, Bakelite and melamine-formaldehyde resin are all heavily cross-linked, infusible, condensation-type thermosetting polymers. Styrene-butadiene rubber (Buna-S/SBR), however, is a synthetic elastomer with relatively few

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Question ID VK-151499