In homologous series there is the difference of mass between adjacent members.

Related Mcqs:

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

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

2. Compound containing two halogen atoms on two adjacent carbon atoms are called as ___________?

   A. Glycols
   B. Vicinal dihalides
   C. Geminal dihalides
   D. Diols

   Submitted by: Aamir khan Hullio

3. 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

4. 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

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

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

6. Pfund series are produced in the spectrum of hydrogen atom__________________?

   A. when electrons jump down to 2nd- orbit
   B. when electrons jump down to 3rd- orbit
   C. when electrons jump down to 4th- orbit
   D. when electrons jump down to 5th- orbit

7. The melting points and boiling points upto meddle of 3d- series ____________________?

   A. increases
   B. decreases
   C. remain same
   D. no regular trend

8. If R is the Rydberg constant for hydrogen, then wave-number of the second line in the Lyman series is _________?

   A. 2 R
   B. R/2
   C. 3R/4
   D. R/4

   Submitted by: Muhammad Ali Kunbhar

9. 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

10. What is the mass of one mole of Iodine?

    A. 74g
    B. 254g
    C. 127g
    D. 53g

    Submitted by: Shumail Bashir