GATE MT 2019 Paper 1 — page 13

Questions 37–39 of 65. Imported answers require review unless explicitly marked reviewed.

Match the injection metallurgy techniques in Column I with the corresponding objectives in Column II.

Column I: Injection metallurgy techniques (P) Aluminium wire feeding (Q) Calcium treatment (R) Argon rinsing (S) Lime powder injection

Column II: Objectives

Inclusion modification

Mixing of liquid steel

De-sulphurization

Deoxidation

Your answerChoose one option.

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

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

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

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

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The table (see options below) providing correct information about crystal structure, co-ordination number and packing fraction is ____________.

[Note: FCC: Face centered cubic; BCC: Body centered cubic; DC: Diamond cubic. CN: Coordination number; PF: Packing fraction]

Your answerChoose one option.

Crystal structure | CN | PF FCC | 12 | 0.74 BCC | 8 | 0.68 DC | 4 | 0.34

Crystal structure | CN | PF FCC | 8 | 0.74 BCC | 4 | 0.68 DC | 6 | 0.34

Crystal structure | CN | PF FCC | 8 | 0.52 BCC | 12 | 0.68 DC | 12 | 0.74

Crystal structure | CN | PF FCC | 12 | 0.74 BCC | 8 | 0.68 DC | 4 | 0.74

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Match the phase transformation in Column I with the corresponding reaction in Column II.

[Note: α, β, γ are solid phases; L, L₁, L₂ are liquid phases.]

Column I: Phase transformation (P) Peritectic (Q) Monotectic (R) Eutectoid (S) Syntetic

Column II: Reaction

γ → α + β

L₁ + L₂ → α

L₁ → L₂ + α

L + α → β

Your answerChoose one option.

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

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

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

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

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2019 · Paper 1