In the production of wrought iron Mg Si and P are removed in the form of___________________?

Related Mcqs:

1. Carbon in wrought iron is present as_________?

   A. Silicon carbide
   B. Iron carbide
   C. Graphite
   D. Partly as iron carbide and partly as graphite

   Submitted by: Muhammad Ali Kunbhar

2. 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

3. The percentage of suspended solid waste in raw water is removed by coagulation is__________________?

   A. 60
   B. 70
   C. 80
   D. 90

4. Water of crystallization can be removed by________________?

   A. drying
   B. heating
   C. evaporation
   D. All of the above

5. Arsenic oxides are removed by passing through_________________?

   A. Ferric hydroxide
   B. Sodium hydroxide
   C. Calcium hydroxide
   D. Aluminium hydroxide

6. When one hydrogen atom of alkane is removed then it is called________________?

   A. alkene
   B. alkyl
   C. aldehyde
   D. saturated hydrocarbon

7. The phosphate present in sewage water which cause eutrophication Can be removed by adding:

   A. Alum
   B. Chlorine
   C. Lime
   D. permangnate

   Submitted by: Said wali shah

8. In pig iron the concentration of C-atom is ___________________?

   A. 0.12 — 0.25%
   B. 2.5 — 4.5%
   C. 2.0 — 4.0%
   D. 0.25 — 2.5%

9. The coloured glassy mass in borax bead test is due to the formation of___________________?

   A. metal borate
   B. metal meta borate
   C. metal boride
   D. metal silicate

10. Tincal is a mineral of___________________?

    A. A1
    B. Si
    C. B
    D. C