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

Related Mcqs:

1. 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

2. Chalcopyrite is the main ore of_________________?

   A. Copper
   B. Lead
   C. Tin
   D. Iron

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

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

4. ______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?

   A. Bauxite
   B. Limestone
   C. Quartz
   D. Manganese

5. Pig iron is produced by blast furnaces in India using mostly the iron ore named _______________?

   A. Hematite
   B. Magnetite
   C. Siderite
   D. Chalcopyrite

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

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

7. ______________ is an ore of lead?

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

8. 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

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

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

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

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