Ozone layer of upper atmosphere is being destroyed by:

Related Mcqs:

1. What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer?

   A. Sulphur di-oxide
   B. Carbon di-oxide
   C. Nitrogen oxides and fluoro-carbons
   D. Carbon monoxide

2. Ozone layer in stratosphere is effected by:

   A. Excess CO2
   B. Excess CO
   C. Chloro-fluoro-carbon
   D. Low rainfall

3. Ozone layer having:

   A. The protective layer of ozone in the upper stratosphere, found at a level between 15 and 150 km above
   B. The Earth which prevents harmful ultraviolet B radiation which causes skin cancer and threatens plant life from reaching the ground
   C. Both (a) & (b)
   D. None of these

4. The lower most layer of atmosphere in which man and other living organisms exist is called:

   A. Thermosphere
   B. Mesosphere
   C. Stratospheres
   D. Troposphere

5. Formation of ozone hole is maximum over:

   A. China
   B. Antarctica
   C. Europe
   D. Africa

6. The result of ozone hole is:

   A. Global warming
   B. Acid rain
   C. Greenhouse effect
   D. The UV radiations reach the earth

7. Ozone hole is refers to as:

   A. Hole in ozone layer
   B. Decrease in the ozone layer in troposphere
   C. Decrease in thickness of ozone layer in stratosphere
   D. Increase in the thickness of ozone layer in troposphere

8. Ozone depletion in stratosphere shall result in:

   A. Forest fires
   B. Green house effect
   C. Global warming
   D. Increased incidence of skin cancer

9. Checking of re-radiating heat by atmospheric dust water vapour, ozone, CO2 is known as:

   A. Green house effect
   B. Radioactive effect
   C. Ozone layer effect
   D. Solar effect

10. The desert vegetation has been destroyed by incessant pressure of grazing by millions of:

    A. Goats
    B. Sheep
    C. Camels
    D. Cattle
    E. All of the above