The ultraviolet radiations from the sun cause reaction that produce:

Related Mcqs:

1. The ultraviolet radiations are able to peretreate in a sea as deep as:

   A. 40 meters
   B. 400 meters
   C. 200 meters
   D. 5 meters

2. Ultraviolet rays of sunlight react and produce:

   A. CO
   B. SO2
   C. Ozone
   D. Flourides

3. The most harmful effect of ionising radiations precisely involves:

   A. Cell membranes
   B. DNA
   C. Mitochondria and ribosomes
   D. Nucleus

4. The atmospheric UV radiations are absorbed in the zone called:

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

5. The solar radiations are the sole source of:

   A. Energy
   B. Materials
   C. Both (a) & (b)
   D. Standing state

6. Which of the following does not cause pollution?

   A. CO2
   B. SO2
   C. H2
   D. CO

7. The main cause of pollution in metro cities is due to:

   A. Industries
   B. Automobiles
   C. Home fuel
   D. Trees

8. The supersonic jets cause pollution by thinning of:

   A. O3 layer
   B. SO2 layer
   C. O2 Layer
   D. CO2 layer

9. The major cause of pollution is:

   A. Man
   B. Plants
   C. Animals
   D. Man and animals

10. The cause of water pollution?

    A. Smoke
    B. 2, 4-D and pesticides
    C. Automobile exhaust
    D. Aeroplanes