Which of the following is not a pyrite ore ?

Related Mcqs:

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

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

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 of the following is an ore of iron ?

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

4. ______________ is an ore of lead?

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

5. Iron ore hematite is concentrated using ____________________?

   A. Electromagnetic separation mainly
   B. Gravity separation
   C. Froth floatation
   D. Roasting

6. 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

7. A mineral is termed as ‘ore’, if ____________________?

   A. A metal can be economically extracted from it
   B. It contains ≥ 40% metal
   C. The metal present in it is costly
   D. All A , B. and C.

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

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

9. ______________ 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

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