Dempsters mass spectrometer has number of zones / parts_________________?

Related Mcqs:

1. 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

2. When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?

   A. lighter
   B. intermediate
   C. heavier
   D. are collected at same time

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. How many zones through which the charge passes in a rotary kiln ?

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

5. The sequence of zones in the rotary kiln are as____________________?

   A. dry zone burning zone decomposition zone cooling zone
   B. cooling zone burning zone decomposition zone dry zone
   C. burning zone cooling zone decomposition zone
   D. dry zone decomposition zone burning zone cooling zone

6. The number of peaks obtained in mass spectrometry shows____________________?

   A. Relative abundance
   B. Average mass of element
   C. Number of isotopes
   D. Relative isotopic mass

7. Molecular mass of water (18g) means__________________?

   A. 1-mole molecules of water
   B. 1-gram molecule of water
   C. 3-gram atoms
   D. all

8. The number of isotopes of elements with even mass number and even atomic number are ________________?

   A. 280
   B. 300
   C. 154
   D. 54

9. Which of the following terms is used for the mass of chlorine 35.5 ?

   A. relative atomic mass
   B. mass number
   C. atomic weight
   D. relative isotopic mass

10. The mass of decimole of electrons (NA) is___________________?

    A. 1.008 mg
    B. 0.184 mg
    C. 0.054 mg
    D. 5.4 mg