2025 · Paper 1

Complete GATE XE 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 121–123 of 175. Imported answers require review unless explicitly marked reviewed.

Question 121

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XE-FMSQ2 marksNeeds review

Choose the option(s) that correct match(es) the Zones with their typical Functions in an industrial extruder.

Zones: P — Feed zone; Q — Compression zone; R — Metering zone. Functions: 1 — The melt acquires a constant flow rate; 2 — No heating takes place; 3 — Polymer melts due to heat transferred from the heating element; 4 — The helical flight of the screw imparts constant flow of the melt; 5 — Polymer melts due to shear forces imparted by the screw.

Your answerSelect all correct options. You can choose more than one.

A.

P-2; Q-5; R-1

B.

P-2; Q-3; R-4

C.

P-5; Q-1; R-2

D.

P-2; Q-1; R-3

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Question 122

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XE-FMSQ2 marksNeeds review

During material testing, stress is applied from time



to



as shown below:



The corresponding strain responses for three different materials are shown in plots P, Q and R.



Choose the option(s) where the strain response is correctly mapped to its material class.

Your answerSelect all correct options. You can choose more than one.

A.

P- purely elastic; Q- purely viscous; R- viscoelastic

B.

P- purely elastic; Q- viscoelastic; R- purely viscous

C.

P- purely viscous; Q- purely elastic; R- viscoelastic

D.

P- purely viscous; Q- viscoelastic; R- purely elastic

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Question 123

Open question

XE-FMSQ2 marksNeeds review

Which option(s) correctly match(es) the Polymer property with its appropriate Units?

Polymer property: P — Hildebrand solubility parameter; Q — Loss modulus; R — Toughness; S — Flexural strength. Units: 1 — Pa; 2 — J m



; 3 — (MPa)



; 4 — Kg m



s



.

Your answerSelect all correct options. You can choose more than one.

A.

P-2; Q-1; R-3; S-4

B.

P-2; Q-4; R-3; S-1

C.

P-3; Q-1; R-2; S-4

D.

P-3; Q-4; R-2; S-1

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