Formula of Galena is________?

Related Mcqs:

1. A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?

   A. C2H6O
   B. C6H18O3
   C. C6H12O6
   D. C2H5O

   Submitted by: Muhammad Ali Kunbhar

2. A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

   A. C2H4
   B. C3H6
   C. C4H8
   D. C5H10

   Submitted by: Muhammad Ali Kunbhar

3. The average salinity of sea water is________?

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

   Submitted by: Muhammad Ali Kunbhar

4. A process used for the Concentration of Ore is________?

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

   Submitted by: Muhammad Ali Kunbhar

5. Basicity of orthophosphoric acid is________?

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

   Submitted by: Muhammad Ali Kunbhar

6. Percentage of lead in lead pencil is________?

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

   Submitted by: Muhammad Ali Kunbhar

7. Water molecule is________?

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

   Submitted by: Muhammad Ali Kunbhar

8. The Bond Energy of H-F is________?

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

   Submitted by: Naintara Mustafa

9. Aldehyde and ketone have same general formula for homologous series_________________?

   A. CnH2nO2n
   B. CnH2n
   C. CnH2nO
   D. CnH2nOn+1

10. What is the Chemical formula of Zinc Hydroxide _________ ?

    A. Zn(OH)2
    B. ZNO2
    C. Zn2(OH)3
    D. ZnOH

    Submitted by: Rashid Mehmood