A process used for the Concentration of Ore is________?

Related Mcqs:

1. A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?

   A. 74% Fe
   B. 75% Fe
   C. 77% Fe
   D. 78% Fe

   Submitted by: Muhammad Ali Kunbhar

2. The ore CaSO4.H2O has the general name_______________?

   A. Gypsum
   B. Dolomite
   C. Calcite
   D. Plaster of Paris

3. The purpose of Smelting an ore is to________?

   A. Reduce it
   B. Oxidize it
   C. Obtain an alloy
   D. Separate volatile impurities

   Submitted by: Muhammad Ali Kunbhar

4. Cassiterite is an ore of_______?

   A. Mn
   B. Ni
   C. Sb
   D. Sn

   Submitted by: Muhammad Ali Kunbhar

5. The average salinity of sea water is________?

   A. 3%
   B. 3.5%
   C. 2.5%
   D. 2%

   Submitted by: Muhammad Ali Kunbhar

6. Basicity of orthophosphoric acid is________?

   A. 2
   B. 3
   C. 4
   D. 5

   Submitted by: Muhammad Ali Kunbhar

7. Percentage of lead in lead pencil is________?

   A. Zero
   B. 20
   C. 80
   D. 70

   Submitted by: Muhammad Ali Kunbhar

8. Water molecule is________?

   A. V-shaped
   B. Angular
   C. Pyramidal
   D. Triangular planer

   Submitted by: Muhammad Ali Kunbhar

9. Formula of Galena is________?

   A. PbS
   B. HgS
   C. AS2S3
   D. FeS2

   Submitted by: Muhammad Ali Kunbhar

10. The Bond Energy of H-F is________?

    A. 456kJ/mol
    B. 562kJ/mol
    C. 281kJ/mol
    D. None

    Submitted by: Naintara Mustafa