GATE 2018 Metallurgical Engineering (MT) solved Question Paper
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GATE 2018 Metallurgical Engineering (MT) Question Paper and answer

1.In froth flotation, the primary purpose of adding collectors is to:
(A) make the surface of the mineral hydrophobic.
(B) make the surface of the mineral hydrophilic.
© stabilize the froth.
(D) adjust the pH.

2.Consider the following engineering components:
P. Gas turbine blades
Q. Tungsten-based heavy alloy penetrators
R. Self-lubricating bearings
S. Engine block of an automobile
Which of the following two components are produced by powder metallurgy?
(A) P & Q (B) Q & R © Q & S (D) P & S

3.Which of the following materials are protected by passivation (i.e., formation of a thin
adherent film on the surface) from corrosion?
P. Aluminium alloys
Q. Mild steel
R. Stainless steel
S. Silver
(A) P & Q (B) Q & R © Q & S (D) P & R


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GATE 2018 Metallurgical Engineering (MT) answer key


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