Pfund series are produced in the spectrum of hydrogen atom__________________?

Related Mcqs:

1. Spectrum is produced due to________________?

   A. Different wavelength
   B. Different colours
   C. Different intensities
   D. all have little contribution

2. Water Gas is a mixture of two gases Hydrogen & Carbon monoxide, while separating Hydrogen gas by liquification process which one is liquefied first__?

   A. Hydrogen Gas
   B. Carbon Monoxide Gas
   C. Both at same time
   D. None of them

   Submitted by: Aamir khan Hullio

3. Water Gas is a mixture of two gases Hydrogen & Carbon monoxide, while separating Hydrogen gas by liquification process which one is liquefied first__?

   A. Hydrogen Gas
   B. Carbon Monoxide Gas
   C. Both at same time
   D. None of them

   Submitted by: Aamir khan Hullio

4. 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

5. When an atom absorbs energy the lines in the spectrum will appear which are_________________?

   A. Brighter
   B. Darker
   C. Colourless
   D. Hard to locate

6. Generally the limit of visible spectrum is__________?

   A. 1000 to 300 A°
   B. 3800 to 7600 A°
   C. 8000 to 10,000 A°
   D. 12,000 to 15,000 A°

   Submitted by: Muhammad Ali Kunbhar

7. Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?

   A. Dows process
   B. Friedel & Craft acylation
   C. Friedel & Craft alkylation
   D. Clemmenson reduction

8. When one hydrogen atom of alkane is removed then it is called________________?

   A. alkene
   B. alkyl
   C. aldehyde
   D. saturated hydrocarbon

9. A scale which used to measure the Hydrogen Ion concentration in a solution is known as__________?

   A. Thermometer
   B. Viscometer
   C. PH Scale
   D. Stagmometer

   Submitted by: Ali Jan

10. The method in which more steam is passed through the water Gas to oxidize CO to Carbon Dioxide which is then more soluble in water than Hydrogen gas and gets separated is called______.

    A. liquification process
    B. Bosch  Process
    C. Fragmentation
    D. Thermal decomposition

    Submitted by: Aamir khan Hullio