GATE XE · 2023 · XE-F
Question 123: Synthesis, manufacturing and properties
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Question 123
XE-FMSQ2 marksNeeds review
Mechanical stress is applied on a polymer. Identify the correct match(es) between the statements (1, 2, 3, 4, 5) that describe the deformations and the regimes (P, Q, R).
P: Rubbery regime
Q: Region around glass transition temperature (T_g)
R: Sample under deformed state
Stress-relaxation takes place and the excess free energy is dissipated
The motions of the molecules are long-range
Segmental motion of the molecules is important
The maximum relaxation time is strongly dependent on the molecular weight
The deformations are independent of the molecular weight and primarily depend on the local structure
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2023XE-F
GATE XE 2023 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-F
- Question type
- Multiple select (MSQ)
- Marks
- 2 marks
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