Percentage of lead in lead pencil is________?

Related Mcqs:

1. The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?

   A. Ethylene iodide B. Ethylene bromide C. Ethylene chloride D. Ethylene fluoride...

2. Percentage of sulfuric acid in lead accumulator is__________________?

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

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. Water molecule is________?

   A. V-shaped B. Angular C. Pyramidal D. Triangular planer Submitted by: Muhammad Ali Kunbhar...

7. Formula of Galena is________?

   A. PbS B. HgS C. AS2S3 D. FeS2 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. Lead accumulators are_______________?

   A. secondary cell B. primary cell C. voltaic cell D. both A & C...

10. Lead battery is secondary battery the paste used in it is______________?

    A. Magnese dioxide B. Zinc chloride C. Ammonium chloride D. AOT Submitted by: Safeullah Bullo...