JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Thermosets are:

(A)Cross-linked polymers
(B)Don't melt or soften on heating
(C)Cross-linking is usually developed at the time of moulding where they harden reversibly
(D)All of the aboveCorrect

Answer: (D)

Solution

Thermosets are indeed heavily cross-linked polymer networks (statement a), and once set, they don't melt or soften on subsequent heating, remaining rigid (statement b). The cross-linking does develop during the moulding/curing process (statement c as worded here is taken, within this question's

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Question ID VK-151567