Which of the following air pollutants is more dangerous for ozone layer ?

Related Mcqs:

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

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

2. Ozone hole is substantial depletion of ozone in every year during__________________?

   A. Aug – Nov B. Sep – Nov C. Nov – Dec D. Dec – Jan...

3. 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...

4. When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?

   A. ABAB (hexagonal) B. ABCABC (Cubic) C. Orthor hombic D. Rhombohedral...

5. Pollutants have adverse effect over_________________?

   A. Biosphere B. Ecosystem C. Both a & b D. Hydrosphere...

6. A single chlorine free radical can destroy how many ozone molecules ?

   A. 10 B. 100 C. 10000 D. 100000...

7. which Compound Destroy The OZONE ?

   A. CFCs B. CH3COOH C. BOTH A & B D. None Of These Submitted by: Ali Jan...

8. The rate of formation of ozone depends on the flux of:

   A. visible radiation B. Ultra violet radiation C. Infrared radiation D. Gamma rays Submitted by: Said wali shah...

9. Which of the following noble gases is abundant in air?

   A. Neon B. Helium C. Argon D. Methane Submitted by: Malik Asghar Hussain...

10. When benzene is heated in air with V2O5 at 450°C yields_________________?

    A. Phenol B. Maleic anhydride C. Glyoxal D. Benzoic acid...