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

Related Mcqs:

1. Formation of ozone hole is maximum over:

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

2. The result of ozone hole is:

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

3. Ozone layer of upper atmosphere is being destroyed by:

   A. Sulphur di-oxide
   B. Carbon di-oxide
   C. Chloro-fluoro-carbon
   D. Smog

4. 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

5. Ozone depletion in stratosphere shall result in:

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

6. 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

7. Ozone layer in stratosphere is effected by:

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

8. If there were no CO2 in the earth’s atmosphere, the temperature of earth’s surface would have been:

   A. same as present
   B. Less than the present
   C. Higher than the present
   D. Dependent on the amount of O2 in the atmosphere

9. It is thought that the concentration of CO2 by the year 2040 shall reach:

   A. 400 ppm
   B. 500 ppm
   C. 475 ppm
   D. 450 ppm

10. It is thought that the concentration of CO2 in the year 1890 was around:

    A. 245 ppm
    B. 275 ppm
    C. 215 ppm
    D. 230 ppm