Extractive Metallurgy MCQ Questions and Answers | Metallurgical Engineering

A. Selective distillation is a purification technique used in extractive metallurgy

B. Coking of coal is carried out in a shaft furnace

C. Precipitation is a hydrometallurgy route of purification

D. Predominance area diagram is used to select the opening conditions of roastings

A. Rutile: TiO₂

B. Ilmenite: FeO.TiO₂

C. Both A and B

D. None of these

A. Pidgeon process

B. WORCA process

C. Both A and B

D. None of the these

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

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

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

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

A. The base bullion consists high Bi% which get separated

B. addition of Ca and Mg to forms an insoluble intermetallic compound of Bi

C. Both A and B

D. None of these

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

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

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

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

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

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

C. P-1, Q-4, R-3, S-1

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

A. The electrolyte consists of molten Na₃AlF₆ with approximately 1 to 8% Al₂O₃

B. Approximately 80% of the aluminium deposited on the cathode comes from cryolite

C. Sodium is deposited along with aluminium, but is immediately vapourised

D. Anode effect sets in when the cryolite concentration goes below 40%

A. Jigging

B. Tabling

C. Floatation

D. None of the these

A. Thorium

B. Titanium

C. Molybdenum

D. None of the above