Chalcopyrite is the main ore of_________________?

Related Mcqs:

1. _______________ is used as a flux in the smelting of copper ore like chalcopyrite ?

   A. Coke breeze
   B. Lime powder
   C. Silica/quartz
   D. Dolomite

2. Ore concentration by froth floatation utilises the ______________ of ore particles ?

   A. Density difference
   B. Wetting characteristics
   C. Terminal velocities
   D. None of these

3. Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

   A. C
   B. CO
   C. CO2
   D. H2

4. Flux addition during smelting of ore is done to___________________?

   A. Remove impurities/gangue
   B. Enhance rate of reaction
   C. Accelerate reduction of ore
   D. Separate slag from metal

5. Which of the following is an ore of iron ?

   A. Galena
   B. Chalcopyrite
   C. Hematite
   D. Bauxite

6. ______________ is an ore of lead?

   A. Quartz
   B. Galena
   C. Siderite
   D. Chalcopyrite

7. ______________ is an ore concentrating metallurgical process involving a chemical change?

   A. Electromagnetic separation
   B. Froth floatation
   C. Roasting
   D. None of these

8. Which of the following is not a pyrite ore ?

   A. Celestite
   B. Galena
   C. Gypsum
   D. Siderite

9. Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?

   A. Reduction
   B. Roasting
   C. Calcination
   D. Smelting

10. Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about ___________________?

    A. 0.1 to 0.5
    B. 1 to 5
    C. 5 to 10
    D. 15 to 25