The number of peaks obtained in mass spectrometry shows____________________?

Related Mcqs:

1. The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is___________?

   A. 2.05 gram B. 3.05 gram C. 4.05 gram D. 5.05 gram Submitted by: Muhammad Ali Kunbhar...

2. Mass spectrometer is used to determine Mass number of isotopes and___________________?

   A. Atomic number B. Relative abundance C. Electronic configuration D. All of the above...

3. 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...

4. When methl iodide and ethyl iodide are treated with sodium metal possible major products are obtained ?

   A. 1 B. 2 C. 3 D. 4...

5. When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?

   A. phenol is unsaturated B. 2-bromophenol is insoluble in water C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack D. acid-base reaction...

6. When electron jump into orbit 1 then series obtained is___________________?

   A. Lyman B. Paschen C. Pfund D. Brackett...

7. Acetic anhydride can be obtained by treating ethyl alcohol with___________________?

   A. P2O5 B. H2SO4 C. Both A and B D. PCI5...

8. Methanol can be obtained from_________________?

   A. water gas B. destructive distillation of wood C. methane D. all...

9. Absolute alcohol is obtained when rectified spirit is treated with__________________?

   A. Ca(OH)2 B. CaCO3 C. CaCl2 D. CaO...

10. The metallurgical process in which a metal is obtained in a fused state is called__________?

    A. smelting B. roasting C. calcinations D. froth floatation Submitted by: Muhammad Ali Kunbhar...