Residence time of methane in the atmosphere is___________________?

Related Mcqs:

1. Equal masses of methane and oxygen are mixed in empty container at 250?(C) The fraction of total pressure exerted by oxygen is___________________?

   A. one / seventeen
   B. sixteen / seventeen
   C. one / three
   D. two / three

2. Incomplete oxidation of methane in the limited supply of air forms ?

   A. CO2 and H2O
   B. CH3OH
   C. CO + H2 + C
   D. CO + H2O + C

3. The bond angle between hybrid orbitals in methane CH3 is___________?

   A. 115.5°
   B. 109.5°
   C. 105. 7°
   D. 180°

   Submitted by: Muhammad Ali Kunbhar

4. Hydrogen Gas can be prepared by thermal decomposition of Methane in the absence of Air at above____

   A. 500⁰C
   B. 700⁰C
   C. 900⁰C
   D. 1300⁰C

   Submitted by: Aamir khan Hullio

5. In which of the following layer of atmosphere there is more thickness of ozone layer ?

   A. troposphere
   B. stratosphere
   C. mesosphere
   D. photosphere

6. Which of the following noble gases is not present in atmosphere?

   A. Argon
   B. Helium
   C. Radon
   D. Xenon

   Submitted by: Malik Asghar Hussain

7. Ozone is formed in the upper layer of the atmosphere from oxygen by action of:____________?

   A. Free radicals
   B. Cosmic rays
   C. Nitrogen oxides 
   D. UV -rays

   Submitted by: Said wali shah

8. The process by which a substance absorbs moisture upon exposure to atmosphere is called?

   A. Efflorescence
   B. Dehydrogenation
   C. Desalination
   D. Deliquescence 

   Submitted by: Farhan Rana

9. End name of enzyme is___________________?

   A. yl
   B. ase
   C. one
   D. al

10. The longest period in the modern periodic table is___________________?

    A. 6th
    B. 7th
    C. 2nd and 3rd both
    D. 5th