Generally the limit of visible spectrum is__________?

Related Mcqs:

1. The earth absorb radiation in Visible range but emit radiation at the same rate in the:

   A. Ultra voilet
   B. Gamma rays
   C. Infrared
   D. All of these

   Submitted by: Said wali shah

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

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

3. Spectrum is produced due to________________?

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

4. 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

5. The IUPAC name of ethylene oxide is__________?

   A. Epoxy methane
   B. Oxoethene
   C. Methoxymethane
   D. Oxirane

   Submitted by: Muhammad Ali Kunbhar

6. The PH of the 0.0032 M H2SO4 is__________?

   A. 3.2
   B. 4.0
   C. 2.198
   D. 1.0

   Submitted by: Muhammad Ali Kunbhar

7. The heat energy produced when the human body metabolises 1 gram of fat is__________?

   A. 30 KJ
   B. 1 KJ
   C. 39 KJ
   D. 29 KJ

   Submitted by: Muhammad Ali Kunbhar

8. The IUPAC name of pyridines is__________?

   A. Azolo
   B. Azine
   C. Azolidins
   D. Diazine

   Submitted by: Muhammad Ali Kunbhar

9. The element used for the formation of alloys is__________?

   A. Iron
   B. Calcium
   C. Mercury
   D. Chromium

   Submitted by: Aamir Hullio

10. The bond energy of Hydrogen molecule is__________?

    A. 110Kcal/mol
    B. 106Kcal/mol
    C. 104Kcal/mol
    D. 150KJcal/mol

    Submitted by: Aamir khan Hullio