The purpose of Smelting an ore is to________?

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. A process used for the Concentration of Ore is________?

   A. Roasting
   B. Forth flotation
   C. Electrolysis
   D. Distillation

   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. A elements are named as alkali metals because_______________?

   A. Their oxides are basic
   B. Their oxide and hydroxides are water soluble
   C. Both A & B
   D. They are found in earth

6. Sodium is not observed in +2 oxidation state because of its__________________?

   A. high first ionization potential
   B. high second ioniation potential
   C. high ionic radius
   D. high electronegativity

7. The preparation of benzene from acetylene can also be said as_________________?

   A. Oxidation
   B. Polymerization
   C. Dehydration
   D. Condensation

8. Compounds of nitrogen and phosphorus are mostly________________?

   A. ionic
   B. covalent
   C. polar
   D. all varieties are possible

9. The halogen which reacts spontaneously with gold (Au) to form Au+3 is ________________?

   A. F2
   B. Cl2
   C. Br2
   D. I2

10. The typical reactions of aldehyde is _____________?

    A. Electrophilic addition
    B. Nucleophilic substitution
    C. Nucleophilic addition
    D. Nucleophilic elimination

    Submitted by: Aamir khan Hullio