GATE XE Processing of Materials PYQs & Answers — Page 2

Questions 11–15 of 15. Imported answers require independent review unless marked reviewed.

Read the two statements related to sintering and select the correct option.

Statement-1: Sintering in vacuum leads to improved densification as compared to sintering under ambient (at atmospheric pressure) condition.

Statement-2: Closed pores formed during sintering inhibit full densification.

Your answerChoose one option.

Both Statement-1 and Statement-2 are FALSE

Both Statement-1 and Statement-2 are TRUE

Statement-1 is TRUE but Statement-2 is FALSE

Statement-1 is FALSE but Statement-2 is TRUE

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Select the correct option that appropriately matches the process to the material/product that can be fabricated using them.

Process (I) Powder processing (II) Spin coating (III) Czochralski process (IV) Chemical vapor deposition

Material/Product (P) Organic semiconductor thin films (Q) Single crystal silicon (R) Poly-silicon (S) Porous bronze bearings

Your answerChoose one option.

I-S, II-P, III-R, IV-Q

I-S, II-R, III-Q, IV-P

I-S, II-P, III-Q, IV-R

I-P, II-R, III-Q, IV-S

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Match the sintering process in column I with the most suitable products in column II.\n\nColumn I\n(P) Solid state sintering\n(Q) Liquid phase sintering\n(R) Spark plasma sintering\n(S) Laser sintering\n\nColumn II\n(1) Carbon nanotube products\n(2) Mixture of Cu and Zn powder products\n(3) Iron powder products\n(4) 3D printed products

Your answerChoose one option.

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

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

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

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

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Which processing technique is best suited for manufacturing decorative PVC floor tiles?

Your answerChoose one option.

Blow molding

Filament winding

Rotational molding

Calendering

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Match the processes in Column I with products in Column II

Column I (P) Slip casting (Q) Zone refining (R) Sputtering (S) Atomization

Column II (1) Metal powders (2) Thin films (3) Ceramic parts (4) Single crystal (5) Metal sheets

Your answerChoose one option.

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

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

P-3; Q-4; R-5; S-1

P-3; Q-4; R-1; S-5

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GATE XE Processing of Materials PYQs

Question 10

Question 11

Question 11

Question 35

Question 46