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

Related Mcqs:

1. The main pollutant of leather tanneries in the waste water is____________________?

   A. chromium III
   B. chromium IV
   C. chromium V
   D. chromium VI

2. Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?

   A. 60%
   B. 50%
   C. 52%
   D. 8%

3. Water of crystallization can be removed by________________?

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

4. 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

5. Percentage of sulfuric acid in lead accumulator is__________________?

   A. 40%
   B. 25%
   C. 30%
   D. 50%

6. Which one of the following set of raw material is most suitable for manufacture of urea ?

   A. CH4 N2 and CO2
   B. H2 N2 and CO
   C. H2 CO2 and H2O
   D. H2O N2 and H2

7. The composition of mixture of clay and lime stone in the raw for cement material is __________________?

   A. 75% lime stone and 25% clay
   B. 25% lime stone and 75% clay
   C. 15% lime stone and 55% clay
   D. 55% lime stone and 15% clay

8. Which one of the following raw material is not present in the cement ?

   A. lime stone
   B. gypsum
   C. KNO3
   D. iron oxide

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

   A. oxides
   B. silicates
   C. slag
   D. carbonates

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

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