Extractive Metallurgy MCQ Questions and Answers | Metallurgical Engineering

A. 2.29 & 99.99

B. 3.29 & 99.99

C. 4.29 & 99.99

D. None of these

A. Sphalerite is zinc oxide

B. The first law of thermodynamics is stated as δE = δQ - δW

C. Lead can be produced in a blast furnace

D. T. Ferroxidans is a fungus that can be used for leaching chalcopyrite

A. A thick mushy layer form in between matte and slag which interfering into the separation

B. A wide variation in temperature as 200°C at top to 1200°C

C. Both A and B

D. None of these

A. Copper

B. Zinc

C. Zirconium

D. Nickel

A. Haematite

B. Magnetite

C. Ilmenite

D. Pyrolusite

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

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

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

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

A. a metalrod is dipped in a molten pool of liquid to dissolve slowly and the liquid is refined continuously

B. liquid metal is refined in the zone of electric arc in the DC arc furnace

C. a metal in the form of long rod is melted over a short length and molten region is made to traverse along the length of the rod

D. a long metal rod is cut into small parts and each part is melted and refined separately

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

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

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

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

A. Atomic number: 13, Atomic weight: 27

B. Density: 2.702 gm/cm³

C. Melting point: 660°C, Boiling point: 24677°C

D. All are correct

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

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

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

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